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Why Do Drain Flies Keep Coming Back

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Drain flies, also known as sewer flies, are small, black flies that can be found near decaying matter or in sewers. They are a common pest and can be difficult to get rid of. Some people wonder why these flies keep coming back even after the drains have been cleaned.



There are several reasons why drain flies may keep returning.

Poorly Cleaning Maintenance

One of the most common reasons is poor cleaning maintenance. If you don’t clean your drains and surfaces thoroughly, then the flies will just keep coming back.

Additionally, if you don’t keep up with regular maintenance, then dirt and gunk can build up in your drains and create the perfect breeding ground for these pests.

Haven’t Found All Breeding Spots

The reason why drain flies keep coming back is because you have not been completely eliminated their breeding spots. There can be many hidden breeding spots in cracks and crevices around drains and sinks. If these areas are not properly cleaned and sealed, the flies will continue to breed and multiply.

To get rid of drain flies for good, it is important to find all of their breeding spots and eliminate them. This may require some detective work, as the breeding spots can be difficult to find.

Surviving Eggs or Larvae

If you want to prevent drain flies from coming back, it’s important to kill all of the surviving eggs or larvae. This can be done by pouring a boiling water down the drain, using a chemical cleaner, or even using a vacuum cleaner to suck them up. If you’re having trouble getting rid of the flies, it might be a good idea to call a professional.

Do Drain Flies Die in Winter?

Improper Sanitation

Drain flies can be difficult to get rid of because they thrive in dirty, moist environments. One of the main reasons these flies come back again and again is because of improper sanitation.

If you have a problem with drain flies, the first step is to clean up the mess. Make sure you are properly disposing of food waste and dirty dishes. Clean up any spills or leaks, and fix any plumbing problems. You should also seal off any cracks or openings where drain flies might be getting into your home.

If you’re still having problems with drain flies, it might be time to call a professional. A pest control expert can identify the source of the problem and help you take steps to eliminate these pesky insects for good.

Clogged Drains

Drain flies thrive in conditions that are conducive to clogged drains. When your drains are clogged, water can back up and create a breeding ground for the flies. In addition, if you don’t clean your drains regularly, food particles and other debris can accumulate and provide even more sustenance for the flies.

Poor Ventilation

If there is not enough air circulation in your home, it can create the perfect environment for drain flies to thrive. They need a warm, moist environment in order to breed, and without proper ventilation, that’s exactly what you’ll provide them. Additionally, if there is any standing water or dirty filters in your ventilation system, that will only attract more flies.