Yes, drain flies eventually go away if you're taking steps both to kill the existing ones and ensure the spot they're coming from is handled.
Control of an infested drain requires thorough cleaning and maintenance for at least 3 weeks or longer to break the life cycle. Adults may congregate at or near windows, but killing adult flies is not effective control.
The drain flies then use this buildup as a food source, breeding ground, and habitat all in one. As long as there are FOGs in the drain, drain flies will continue multiplying and invading the facility.
Peppermint, eucalyptus, and tea tree oils are especially beneficial. Pour a few drops of the chosen oil with water down the toilet. The oils' pungent aroma repels drain flies and disturbs their breeding cycle. To keep the solution effective, reapply it every few days.
If you're unsure which drain is the source, line a clear plastic cup with a very light coating of vegetable oil or petroleum jelly and invert over the suspected drain for several days. This will help catch emerging adults and identify breeding sites.
Several plumbing problems create ideal conditions for drain fly breeding: Slow-draining pipes that allow organic material to accumulate. Hidden leaks creating moisture in walls or under floors.
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-term control. Bleach's caustic nature allows it to clean the drain pipes and kill some of the larvae.
Create a fly and wasp repellent.
This DIY pest repellant should be a staple in the Southern home. Pour equal parts water and Pine-Sol in a spray bottle to spritz on outdoor furniture, the deck, and indoor areas where flies are most likely to flock, such as kitchen countertops.
Boil a pot of water and pour it down the drain where you suspect the drain flies are breeding. Pour a 1/2 cup of baking soda down the drain. Slowly pour a 1/2 cup of vinegar down the drain. Cover the drain with a drain plug, and let it sit for at least 5 to 10 minutes.
It can be difficult to prevent drain flies completely, but you can reduce the chances of them being attracted to your drains by keeping them clean. This is as simple as refraining from putting clog-inducing items down the drain, like coffee grinds, rice, solid foods, hair, and more.
A Housefly Will Likely Die on Its Own From Stress
The interior of a home can be disorienting and stressful to a housefly, says Lofquist.
Conclusion: While Drano is effective at removing organic blockages, it does not solely eradicate drain flies or their larvae from your plumbing system. To combat these pests effectively, a combination of regular cleaning, prevention tactics, and the use of safe alternatives is recommended.
Drain flies are most often the result of a clog in a drain or sewer line, it doesn't matter if it's buildup, a soft clog or a hard clog – it just needs to limit the flow of wastewater, causing it to become stagnant and a breeding ground for bacteria.
The process of getting rid of drain flies is generally pretty simple. Usually, boiling water or baking soda and vinegar are enough to flush out their nest and send them on their way.
Knowing the life cycle helps you fight fly infestations. Life Cycle: Adult females lay 30–100 eggs in sludge around sewage and drainage areas. Eggs hatch in 32–48 hours, larval stage lasts 8–24 days, pupal stage 20–40 hours. Adults live about two weeks.
Cinnamon – use cinnamon as an air freshner, as flies hate the smell! Lavender, eucalyptus, peppermint and lemongrass essential oils – Not only will spraying these oils around the house create a beautiful aroma, but they will also deter those pesky flies too.
Some soaps with essential oils can repel insects for a short time but, “Irish Spring soap specifically doesn't have enough quantity to register for mosquitoes [and] no ingredients that would repel flies,” he says.
It will kill flies and roaches when you spray them. I don't like this page.
Vinegar and baking soda: Pour 1/2 cup baking soda and 1 cup of vinegar down the drain.
Combing, boiling water, vinegar and baking soda will kill drain flies, but will also help remove all the flies breeding ground which includes hair, grime and grease. It will create a chemical reaction and an clear the blockages caused by organic matter in the drainpipe.
"Combine 1/2 cup salt with 1/2 cup baking soda and 1 cup of vinegar and pour down the drain." Leave it overnight, and in the morning, pour boiling water down the drain.
Drain flies feed on filth and scum that can build up in areas such as drains, drain openings, sewers, septic tanks, and kitchen sinks. A great way to identify which drain-source the flies are coming from is to put clear tape over the drain so that they will fly into it and get stuck.
If possible, keep the drains covered when not in use. It's a simple and cheap solution to stop drain flies from getting inside the drain. Most importantly, keep your drains clean with and enzyme cleaner once a month to reduce grime build-up.
Drain flies, also known as sewer gnats, feed and lay eggs on decaying organic matter. So, an overfull septic tank provides a breeding ground for these little pests. They are only about ⅛ of an inch big, but you will notice them hovering around bathtubs, sinks, and showers.