Yes, bleach will kill drain flies. Like all insects, they do not have lungs and instead breathe via tiny openings in their exoskeletons. They don’t want to …Add up to 20% liquid soap to the spray bottle and fill the rest of the volume with water. This way will bleach & kill drain flies. Make sure the insects get wet! If you notice this kind of house flies in the kitchen, leave a mixture of sugar, warm water, and white vinegar in a bowl overnight. It will attract them.Mostly phorid flies and some sciarid flies (called dark-winged fungus gnats). Phorids are also called drain flies, but moth flies (psychodids-which you don't have) also called drain flies. Both of your flies could be drain-associated. Often the sciarid flies are associated with soil and plants.Apr 18, 2023 · Baking Soda and Vinegar. Mix 1/2 cup salt, 1/2 cup baking soda and 1 cup of vinegar and then pour the mixture down the drain, leaving it overnight. In the morning, pour boiling hot water down the ... 1. Use a vinegar and soap trap. 2. Use sticky tape to catch flies. 3. Dissuade flies with strong scents. 4. Catch drain flies with a cup and petroleum jelly. Flies are not the most damaging pest, but they are some of the most irritating when they buzz against window panes and around our ears.A cup of household bleach is generally more than sufficient to kill most drain flies, and all you need to do is pour it down the affected drain. The flies should die off within a few hours, because the chemical is strong enough to kill the flies. They can also be an annoyance to homeowners who have to clean up after their pets.Bleach an Effectiveeight: 400;”>Did you know drain flies can lay up to . 10 – 200 eggs at a time, and those eggs can hatch within 32 – 48 hours?This rapid reproduction rate can make it challenging to eliminate an infestation quickly. And because these insects are attracted to the moist environment of our drains, they can be particularly difficult to control.Bleach flows too quickly down the drain to work properly. Bleach can be dangerous and cause plumbing problems. Although bleach can kill fruit flies, it does not work on all kinds of fruit flies and won’t kill them all. However, you might get away with this trick if you don’t have swarms of flies and just have a couple floating around.A common misconception is that pouring boiling water and/or bleach down a drain will control these flies. However, these treatments do not remove the organic ...Fade ought to never be poured down a channel to kill channel flies. In addition to the fact that bleach is insufficient at killing channel flies, yet it can likewise deliver harmful vapor, Fade ought to never be poured down a channel to kill channel flies.How to: Using ½ cup of salt and a ½ cup of baking soda, sprinkle it in your sink and down the drain. Once you’ve done that, pour a cup of vinegar down the drain. It may fizzle and foam, so be sure your sink or pipe has enough room to let out this excess. Let it keep foaming overnight, then pour boiling water down it in the morning.Yes, bleach will kill drain flies. Bleach is an effective pest killer and eliminates various pests in drains like drain flies and drain roaches. To prepare a ... A Natural Way to Get Rid of Larvae. Another option that can be effective is pouring hot water down a drain and then pouring in at least a cup of white vinegar. This should kill most of the larvae and the vinegar will work to remove the larvae from the inside of the pipe. There are also some specialized products which are specifically designed ... Bleach is not effective for killing drain flies, which are small flies that live in your pipes and lay eggs. Bleach can damage your pipes and cause leaks. …Imperfect mechanical cleaning is the number one reason why drain flies keep showing up over and over again. Eggs and larvae are highly resistant to heat and chemicals, including harsh ones, such as … Mixing these products and breathing in the resulting fumes can lead to shortness of breath, respiratory damage, chest pain, and even death. If you decide to try bleach to kill drain flies, it’s very important to mix it with water only. Pouring full-strength bleach down household drains can permanently damage septic systems. Already available products such as diluted bleach or a combo of baking soda and vinegar can make miracles in killing gnat larvae. On the other side, if the problem with breeding sites has already gone into an advanced stage, it will be necessary to use stronger products, such as those which are available commercially with the intention of treating drain fly … If flies are common around the kitchen sink or bathtub, a cup of bleach may be poured down the drain to kill them. If the fly is still alive when the bleach is poured, it is likely to die from dehydration. Dilute bleach up to a gallon of water and let it sit for a few hours. The bleach will kill any flies that are in the water, but it may not ... 17 Jun 2023 ... How to get rid of drain flies – 5 steps to freshen up your drains · 1. Identify which drains are infested · 2. Use a metal drain brush and hot .....Probably gnats? Get the drains clogged on purpose then pour kerosene down them then light them on fire. No way such a plan could fail.Drain flies are very small, measuring between ⅙ and ¼ of an inch long. They have small, hairy bodies that are brown-gray or black that have a fuzzy appearance. Their wings are also hairy and ...Take Preventative Measures Against Drain Flies Note that, while drains are a common culprit for drain flies (hence their name), dealing with flies is an all-around cleanliness and sanitation issue. The methods below will ensure your restaurant complies with sanitation standards and reduce pests of all kinds, helping to stay in compliance with Food Code …The simple answer is yes, but with a caveat. While bleach can kill drain flies and their larvae on contact, it's not the most effective method for long …Method 5: Salt, baking soda, and vinegar. If the gnats are congregating around your drain, Peterson recommends another concoction: Pour 1 cup of vinegar and a half cup of salt and baking soda down ...Deb asks, "My shower and washing machine drain need a vent pipe. Should I put the vent downstream from both of them or in between them?"Depending on the distance between the drain ...Feb 14, 2024 · Identify the presence of drain gnats with sticky tape over the drain. Eliminate their food source by cleaning organic material from pipes. Attract and kill gnats using a vinegar trap. Use a baking soda and vinegar mixture to clean drains and kill gnat eggs. Prevent future infestations by regularly cleaning drains with these methods. Dec 6, 2022 · Try the below quick hack that eliminates drain flies for good. To get rid of these little pesky insects, first, pour a bucket of boiling water into the drain. Next, add one part of non-chlorine bleach along with five parts of water into a container and mix them well. Once it’s done, empty this solution into the drain and let it sit for the night. Yes, bleach will kill drain flies. Bleach is an effective pest killer and eliminates various pests in drains like drain flies and drain roaches. To prepare a bleach killer mixture, all you need to do is to pour 3-5 tablespoons of bleach in …May 20, 2023 · What Does Bleach Do To The Drain Pipes? Household bleach is a dangerous chemical and even though it can kill these flies, it won’t take care of the problem. Bleach should be used as a last resort after trying some alternatives we will discuss below. Let’s take a look at the reason not to pour bleach in the drain pipes. It is simply not reasonable to use only bleach to kill drain flies. Even if you would pour down multiple bottles of it, some of the eggs or larvae would most likely survive. A simpler and more cost-effective way to get rid of …This is how I got rid of mine: Apple cider vinegar with a drop of dish soap: leave in a shallow plate or bowl (I used a tiny fish bowl from thrift store) near drains to catch those flying around. They will fly in and drown. Replace every day or every other day as needed. Block the drains when not in use.When it comes to ensuring clean and safe drinking water, there are several methods available. One such method is using bleach to purify water. While it may seem unusual to use a ho...May 11, 2022 · Let the bleach sit in the tank for at least 4 hours, but overnight is preferable. The more time the bleach has to work, the more eggs it will kill. Drain and rinse the tank thoroughly once the time is up! Pour vinegar and baking soda down drains. Some flies make their home in the pipes of your RV. Weeds are an unwelcome sight in any garden or lawn. They can take over quickly and be difficult to get rid of. Fortunately, there is an easy and inexpensive way to kill weeds: usin...Mar 16, 2023 · Yes, It does. However, bleach may not be the ultimate solution, as it doesn’t effectively target their eggs and larvae. This limitation arises because bleach tends to flow rapidly through the drain, not allowing enough time to break down the build-up where eggs and larvae reside. To enhance the effectiveness of your drain fly control efforts ... 2 Feb 2016 ... Trying a DIY solution, like pouring bleach, vinegar, or boiling water down the drain, is only a temporary fix. The eggs will survive, and you'll ...May 11, 2022 · Let the bleach sit in the tank for at least 4 hours, but overnight is preferable. The more time the bleach has to work, the more eggs it will kill. Drain and rinse the tank thoroughly once the time is up! Pour vinegar and baking soda down drains. Some flies make their home in the pipes of your RV. In larger doses, chlorine bleach will kill plants while oxygenated bleach will not. Many people use a chlorine bleach and water mixture to kill weeds. In any quantity, chlorine ble...Therefore it’s easiest to treat drain flies at the drain where their larvae are living. Pouring boiling water down the drain 2-3 times per week for three weeks is enough to kill all the larvae, pupae, and adult flies and end the infestation. You can add a capful of bleach to the boiling water to add extra larvae-killing power.Below are the steps to get rid of fruit flies without apple cider vinegar: 1. Choose your bait. If you’re using sugar, dissolve a tablespoon of sugar in about 1/4 cup of warm water in the bowl or jar. If you prefer to use fruit, cut a small piece of ripe, overripe, or rotting fruit and place it in the container. 2. If bleach comes into contact with drain flies, then it’s enough to kill them. However, it’s important to remember, that you’ll need to use bleach multiple times to get the best results. Only flushing your pipes or toilet with bleach once won’t be enough to remove all the drain flies. 11 Sept 2014 ... Does bleach kill fruit flies? Yes but should also try safer methods such as killing Drain flies with vinegar and baking soda. Does clorox ...Take Preventative Measures Against Drain Flies Note that, while drains are a common culprit for drain flies (hence their name), dealing with flies is an all-around cleanliness and sanitation issue. The methods below will ensure your restaurant complies with sanitation standards and reduce pests of all kinds, helping to stay in compliance with Food Code …In larger doses, chlorine bleach will kill plants while oxygenated bleach will not. Many people use a chlorine bleach and water mixture to kill weeds. In any quantity, chlorine ble...May 20, 2023 · What Does Bleach Do To The Drain Pipes? Household bleach is a dangerous chemical and even though it can kill these flies, it won’t take care of the problem. Bleach should be used as a last resort after trying some alternatives we will discuss below. Let’s take a look at the reason not to pour bleach in the drain pipes. Safer Alternatives To Bleach To Get Rid Of Drain Flies. Baking Soda, Salt, and White Vinegar – Combining 1/2 cup of baking soda, 1/2 cup of salt, and 1 cup of white vinegar work for a lot of issues around the home. It …17 Dec 2022 ... Put moth balls onto the top of the drain and cover the top. Will kill many, but until now, still unable to eradicate totally. Tried baking soda ...Bleach temporarily kills ants but is not effective for eliminating a long-term ant invasion. Other popular methods for killing ants, such as ammonia, window cleaner, hot water and ...Not only will bleach fail to kill the drain flies and their eggs, but it can also damage your plumbing or septic tank. As a rule, never pour bleach down your drain. Instead, use our proven methods for killing drain flies. 7 …1. Unclog your drains. For drain flies to congregate, drains need to offer standing or pooling water and lots of organic matter. To eliminate their habitat, unclog your drains with a metal snake, or store-bought chemical drain cleaner, or hire a professional plumber to unclog and service your drains for you. Pros: Will improve the functionality ...Sep 27, 2022 · Step 2 – Eliminate Fruit Flies In Your Outside Areas. Get Rid Of Fruit Flies In Your Yard. The next step is making sure that your rubbish bags (that taken from the house) are completely sealed and as far away from the house as possible. I recommend that you put your bags inside of a sturdy, plastic rubbish holder (preferably one with its own ... Aug 30, 2021 · 6. Try Soap, Water, Sugar, and Vinegar Mixture. Another effective way to get rid of the drain flies is with bait that you can set up. Unlike the baking powder and vinegar solution you put down the drain, the soap water, sugar, and vinegar mixture are more of a trap. If you want a natural way to get rid of drain flies, this is one of the most ... Drain flies come back if you kill the adults but do not kill the larvae. Drain fly larvae take 4 weeks to mature into flies, so they can continue the infestation even if you’ve killed all the adults before. Identify where drain flies are breeding so you can kill the adults and larvae. Using a fly swatter or fly traps will kill the adult drain ... A Natural Way to Get Rid of Larvae. Another option that can be effective is pouring hot water down a drain and then pouring in at least a cup of white vinegar. This should kill most of the larvae and the vinegar will work to remove the larvae from the inside of the pipe. There are also some specialized products which are specifically designed ... Pour a liquid soap into the drain to wash away leftovers. Then place ice cubes there to remove the remaining food particles and run hot water. Pour half a cup of baking soda and cover the garbage disposal. Leave it for ten or more minutes. How to get rid of drain flies in washing machines.Yes, bleach will kill drain flies. Bleach is an effective pest killer and eliminates various pests in drains like drain flies and drain roaches. To prepare a ...Pipe brush: Use a pipe brush to scrub and clean the drains and dislodge organic matter. Then rinse with boiling water. Homemade traps: To eliminate adult flies, mix equal parts sugar, water, and white vinegar in a jar. Add 5-10 drops of liquid dish soap and leave the mixture next to the sink or shower drain overnight.Our guide covers everything you need to know on how to get rid of fruit flies. Read more to learn how to eradicate this pesky pest. Expert Advice On Improving Your Home Videos Late...As drain flies are a species of moth, mothballs provide a straightforward solution for eliminating them. The active ingredient in mothballs, naphthalene, is toxic and effectively kills drain flies. Directions: Place a few mothballs over the opening of your drain. Cover the drain opening and the mothballs with a clear container for at least 2 weeks.Mar 16, 2023 · Yes, It does. However, bleach may not be the ultimate solution, as it doesn’t effectively target their eggs and larvae. This limitation arises because bleach tends to flow rapidly through the drain, not allowing enough time to break down the build-up where eggs and larvae reside. To enhance the effectiveness of your drain fly control efforts ... Drain flies usually settle in leaking pipes. You can prevent drain flies by: Keep drain pipes clean and fixed. Check regularly for any disorders. Disinfect your sewer pipes with special means. Keep an eye on drain clogs and remove them in time. Keep reservoirs with water closed. Don’t leave water in watering tanks.A: I don't know, but using a bleach based shower cleaner twice a month will kill the little black flies which commonly infest drains. Seabrook Dreamin'. · 7 ...Mar 21, 2017 · Make a drain cleaner with vinegar and baking soda to kill drain flies by doing the following: Mix 1/2 cup salt and 1/2 cup baking soda and pour into the drain. Pour in the drain 1 cup of white vinegar. Allow the mixture to work overnight to kill off all the drain flies and destroy their environment. Life Cycle. Drain flies, also known as moth flies or sewer flies, are small, hairy, moth-like insects measuring 2 to 5 millimetres long depending on the species. They are weak fliers and are often seen walking near breeding sites. Females lay 30 to 100 eggs in masses on the surface of breeding medium.Here are the best ways to kill fruit flies, according to pest experts. 1. Apple cider vinegar and plastic wrap trap. ... That's because bleach passes down the drain too quickly to do a thorough job. There are times when bleach will help kill drain flies; however, generally, it’s not the most effective method to get rid of them. In fact, bleach tends to pass quickly through drain pipes, so it’s unlikely to remove eggs that are waiting to hatch in the thick build-up of muck they’re normally found. You can clean out your drains using bleach, but that can be harsh on your plumbing. Instead, use white vinegar and baking soda or a blend of hydrogen peroxide and water. Both of these will kill any pests (including fruit flies) breeding in your drains, while helping to reduce the risk of clogs. #8 – When Life Gives You Lemons…How to Get Rid of Drain Flies. If you're battling drain flies, you know what an annoyance they can be. They usually come from floor drains, but can also find …Weeds are an unwelcome sight in any garden or lawn. They can take over quickly and be difficult to get rid of. Fortunately, there is an easy and inexpensive way to kill weeds: usin...Pour a liquid soap into the drain to wash away leftovers. Then place ice cubes there to remove the remaining food particles and run hot water. Pour half a cup of baking soda and cover the garbage disposal. Leave it for ten or more minutes. How to get rid of drain flies in washing machines.Fade ought to never be poured down a channel to kill channel flies. In addition to the fact that bleach is insufficient at killing channel flies, yet it can likewise deliver harmful vapor, Fade ought to never be poured down a channel to kill channel flies. There are times when bleach will help kill drain flies; however, generally, it’s not the most effective method to get rid of them. In fact, bleach tends to pass quickly through drain pipes, so it’s unlikely to remove eggs that are waiting to hatch in the thick build-up of muck they’re normally found. Method 5: Salt, baking soda, and vinegar. If the gnats are congregating around your drain, Peterson recommends another concoction: Pour 1 cup of vinegar and a half cup of salt and baking soda down ...Yes, It does. However, bleach may not be the ultimate solution, as it doesn’t effectively target their eggs and larvae. This limitation arises because bleach tends to flow rapidly through the drain, not allowing enough time to break down the build-up where eggs and larvae reside. To enhance the effectiveness of your drain fly control efforts ...Drain flies, on the other hand, breed in stagnant water. ... This simple trick is a great way to clean your drains without extreme chemicals and kill the gnats in one shot. What you will need: ½ cup baking soda ; ... you might …Vinegar. When it comes to killing drain flies with common household products, vinegar is a much better choice than bleach. In fact, there are several ways to kill drain flies with vinegar.You can create a foaming drain cleaner made from baking soda, vinegar, and salt that clears your drain, kills drain flies, and won’t release harmful fumes.Some drain fly infestations are too stubborn or deep within pipes to go away using DIY treatment. Seasoned professionals can eliminate drain flies quickly and …Take Preventative Measures Against Drain Flies Note that, while drains are a common culprit for drain flies (hence their name), dealing with flies is an all-around cleanliness and sanitation issue. The methods below will ensure your restaurant complies with sanitation standards and reduce pests of all kinds, helping to stay in compliance with Food Code …Bleach can get rid of fungus gnats thoroughly. The chemical smell and taste of bleach will eliminate the fungus gnats from the core, providing enough space to terminate gnats from your garden or house. You can make a mixture of bleach and hot water to spray on fungus gnats. If you find any particular area where the gnats make their …To eliminate the pests, use a bacterial drain cleaner. It will remove the sludge and organic material where the eggs are laid. Bleach or ammonia will not do it.Life Cycle. Drain flies, also known as moth flies or sewer flies, are small, hairy, moth-like insects measuring 2 to 5 millimetres long depending on the species. They are weak fliers and are often seen walking near breeding sites. Females lay 30 to 100 eggs in masses on the surface of breeding medium.Flies will be attracted to the fragrant liquid and drown. Boil a pot of water and pour it down the drain 1-2 times daily for a week. Pour ½ cup of salt, ½ cup of baking soda and 1 cup of vinegar ...4. Wine. If you have some wine to spare, you can use it to get rid of flies naturally. Like apple cider vinegar, wine is also one of the best ways on how to kill fruit flies in your house. Here are different ways on how to get rid of flies with wine: In a medium-sized bowl, mix enough wine with liquid dish soap.Pour around 9 ounces into the drain and toilet you want to clean. Coat all the sides of the drain pipes and toilet. If you haven’t used the drains in long, try leaving the product overnight. The product will actively target all the drain flies, their eggs, and larvae living in the drain and toilet.When bleach and other chemicals are poured into the drain, the flies and their larvae will detect the scent and burrow into the gunky debris, shielding themselves from the harsh chemicals. So while it might kill a few individuals, and get rid of quite a few eggs, it won’t do much to get rid of them in large numbers, or long-term.Pure bleach will kill spiders if it is applied directly to the insects. The easiest way to use bleach is to mix it with water in a spray bottle. Bleach also works to remove spider ...Trapping the flies from a drain will help eliminate the possibility that the flies are actually coming from some other location. ... The use of bleach does not seem to rid pipes of the scum, and the drain fly larvae are surprisingly resistant to bleach. Alternative management methods include cleaning pipes and traps with a good, ...In larger doses, chlorine bleach will kill plants while oxygenated bleach will not. Many people use a chlorine bleach and water mixture to kill weeds. In any quantity, chlorine ble...Tear off a piece of clear packing tape several inches long and place it in a bridge shape over the sink drain, sticky-side down. Do the same for the tub or any other drains nearby. Don't press the tape all the way down; leave air gaps. Leave the tape overnight or even for two days, if possible. Drain flies will get caught on the tape as they ...Jun 6, 2023 · Yes, bleach will kill drain flies. Like all insects, they do not have lungs and instead breathe via tiny openings in their exoskeletons. They don’t want to inhale bleach as it will stop their breathing process. It can be a useful method if used correctly, but it’s not very practical for large-scale eradication because the use of too much ... This is how I got rid of mine: Apple cider vinegar with a drop of dish soap: leave in a shallow plate or bowl (I used a tiny fish bowl from thrift store) near drains to catch those flying around. They will fly in and drown. Replace every day or every other day as needed. Block the drains when not in use.Apple cider vinegar. Sweet-smelling dish soap. Fill a small container or an empty soda bottle with 1 teaspoon of apple cider vinegar, 2 tablespoons of water, and a few drops of fruity-smelling ...
Apr 18, 2023 · Baking Soda and Vinegar. Mix 1/2 cup salt, 1/2 cup baking soda and 1 cup of vinegar and then pour the mixture down the drain, leaving it overnight. In the morning, pour boiling hot water down the ... . Wedding dresses near me
In summary, while bleach can kill drain flies, it should not be relied upon as the sole method of control. Its effectiveness is limited and comes with potential drawbacks. For a comprehensive solution to drain fly infestations, a combination of cleaning, preventive measures, and professional pest control services is often necessary.Pour a liquid soap into the drain to wash away leftovers. Then place ice cubes there to remove the remaining food particles and run hot water. Pour half a cup of baking soda and cover the garbage disposal. Leave it for ten or more minutes. How to get rid of drain flies in washing machines.Start by cleaning the drain well with a bottle brush or hard-bristle brush. Pour boiling water down the drain to kill drain flies, gnats, adult fruit flies, and eggs. Finish by pouring some bleach in the sink to kill bacteria, mold, and other fruit fly-attracting residue. I Trap Fruit Flies with Ripened FruitLove fruit, but hate the fruit flies. You can get rid of them pretty easily with a soda bottle trap: Love fruit, but hate the fruit flies. You can get rid of them pretty easily wit...Imperfect mechanical cleaning is the number one reason why drain flies keep showing up over and over again. Eggs and larvae are highly resistant to heat and chemicals, including harsh ones, such as …Pour around 9 ounces into the drain and toilet you want to clean. Coat all the sides of the drain pipes and toilet. If you haven’t used the drains in long, try leaving the product overnight. The product will actively target all the drain flies, their eggs, and larvae living in the drain and toilet.A common misconception is that pouring boiling water and/or bleach down a drain will control these flies. However, these treatments do not remove the organic ...May 11, 2023 · Apple Cider Vinegar, Dish Soap, and Water. Another more natural alternative is creating a trap for the flies using a 2:2:1 ration of apple cider vinegar, dish soap and water. Combine them into a dish and then pour it down the drain. Cover the drain with plastic wrap and poke tiny holes into it. The flies will go down in and get trapped, unable ... Fruit flies are active fliers. Drain flies are weak fliers that prefer to crawl. Fruit flies prefer to congregate on food, especially fruits and vegetables. Drain flies live and breed in and around drains, not food. Fruit flies breed and mature faster than drain flies, making them a more difficult pest to eliminate.Apple Cider Vinegar, Dish Soap, and Water. Another more natural alternative is creating a trap for the flies using a 2:2:1 ration of apple cider vinegar, dish soap and water. Combine them into a dish and then pour it down the drain. Cover the drain with plastic wrap and poke tiny holes into it. The flies will go down in and get trapped, unable ...Preying on Flies - A lot of insects like preying on flies, but the praying mantis is the most fun to watch. Learn how to do this insect experiment in this article. Advertisement A ...Baking Soda and Vinegar. Mix 1/2 cup salt, 1/2 cup baking soda and 1 cup of vinegar and then pour the mixture down the drain, leaving it overnight. In the morning, pour boiling hot water down the ...Drain flies, on the other hand, breed in stagnant water. ... This simple trick is a great way to clean your drains without extreme chemicals and kill the gnats in one shot. What you will need: ½ cup baking soda ; ... you might …Apr 18, 2023 · Baking Soda and Vinegar. Mix 1/2 cup salt, 1/2 cup baking soda and 1 cup of vinegar and then pour the mixture down the drain, leaving it overnight. In the morning, pour boiling hot water down the ... Let it sit for 30-60 minutes and flush it with hot water. Often you have to repeat this process a few times to get rid of all the organic matter in the pipe. If you prefer using natural methods, you can pour baking soda (2-3 tbsp.) and then a …In larger doses, chlorine bleach will kill plants while oxygenated bleach will not. Many people use a chlorine bleach and water mixture to kill weeds. In any quantity, chlorine ble...Flies will be attracted to the fragrant liquid and drown. Boil a pot of water and pour it down the drain 1-2 times daily for a week. Pour ½ cup of salt, ½ cup of baking soda and 1 cup of vinegar ...Mar 21, 2017 · Make a drain cleaner with vinegar and baking soda to kill drain flies by doing the following: Mix 1/2 cup salt and 1/2 cup baking soda and pour into the drain. Pour in the drain 1 cup of white vinegar. Allow the mixture to work overnight to kill off all the drain flies and destroy their environment. How To Replace a Drain Trap - Traps keep harmful sewer gases out of your home, so it's important to keep them clear. Learn how to replace a drain trap in this article. Advertisemen....