How to Get Rid of Flies

Flies are one of the most persistent pest problems in New York City, and summer is when they hit hardest. Whether you're dealing with house flies buzzing around your kitchen, fruit flies hovering over the trash, or drain flies coming up through the bathroom sink, the approach to getting rid of them depends on which species you're dealing with and where they're breeding.

This guide breaks down how to identify a fly infestation, why flies are such a stubborn problem in NYC specifically, what you can do on your own, and when it makes sense to call a professional.

Why Flies Are Such a Problem in NYC

New York City creates near-perfect conditions for flies year-round, but especially in summer. Dense housing, shared trash areas, restaurant dumpsters, and the sheer volume of organic material moving through the city every day mean there is no shortage of breeding sites. Even if your own apartment is spotless, flies can breed in a neighbor's unit, a shared compactor room, or a drain in the building's basement and find their way to you.

The heat makes everything worse. Fly development cycles speed up significantly in warm temperatures. What takes three weeks in spring can happen in a week during an August heat wave. That's why infestations seem to appear out of nowhere and grow so fast in the warmest months.

Identifying the Type of Fly

Not all flies are the same problem, and treating the wrong one wastes time. Here's how to tell them apart.

House flies are the large, gray flies you see landing on food and buzzing around windows. They breed in decaying organic matter: trash, animal waste, rotting food. If you're seeing them in your kitchen or near garbage, look for a nearby breeding source.

Fruit flies are small, brownish, and they cluster near ripe or rotting fruit, fermentation, and moisture. They're common in kitchens but also appear near drains, recycling bins, and anywhere damp organic material collects. Despite the name, they're often more of a drain problem than a fruit problem.

Drain flies, also called moth flies, are tiny, fuzzy, and slow-moving. They breed in the slimy organic buildup inside drains and pipes. If you see small moths near your bathroom sink or shower that don't seem to go anywhere fast, that's likely what you have.

Phorid flies look similar to fruit flies but tend to appear near sewage lines, dead animals in walls, or other decaying organic matter. A sudden phorid fly problem that doesn't respond to normal cleaning can indicate something more serious behind the walls or under the floor.

How Can You Get Rid of Flies On Your Own

For a mild fly problem, a few targeted steps can make a real difference.

Find and eliminate the breeding source first. This is the most important step. Killing adult flies without removing what they're breeding in just means more will replace them. Empty and clean trash cans regularly. Check under the sink for anything rotting or damp. Pour boiling water or a drain cleaning solution down slow drains to break up organic buildup.

For fruit flies, a simple trap works well: put a small amount of apple cider vinegar in a jar, cover the top with plastic wrap, and poke a few small holes. The flies go in and can't get out. Replace it every few days.

For house flies, keep windows screened and food covered. Flies are attracted to warmth, light, and food odors. Keeping surfaces clean and taking out trash frequently removes the attraction.

For drain flies, the fix is usually cleaning the drain itself, not just the surface around it. A drain brush and enzymatic cleaner can break down the biofilm where they breed. You may need to do this several times over a couple of weeks before the population drops.

When DIY Stops Working

If you've addressed the obvious sources and flies keep coming back, the breeding site is somewhere you can't easily reach. This is more common than people expect in NYC apartments and buildings. Flies can breed inside wall voids, under floor drains, in shared building spaces, or in areas accessible only through a neighboring unit.

A professional pest control inspection can identify breeding sites that aren't obvious from a surface-level check. That includes checking drains more thoroughly, identifying sources in shared building spaces, and treating areas that aren't reachable with over-the-counter products.

Another thing professionals bring is the ability to tell you definitively which species you're dealing with. That matters because the treatment approach is different for each one, and misidentifying the fly leads to treatments that don't address the actual problem.

Keeping Flies Out Long-Term

Prevention is mostly about eliminating what attracts them. Keep food sealed and stored, take out trash before it sits long enough to smell, clean drains monthly, and check window and door screens for gaps. In a multi-unit building, it also helps to know your building's trash and recycling schedule so you're not storing waste longer than necessary.

Flies are fast breeders and opportunistic. The conditions that create an infestation can rebuild quickly if the underlying source isn't addressed. Consistency matters more than any single treatment.

Full Scope Pest Control Serves NYC, Yonkers, and Long Island

If you're dealing with a fly problem that isn't responding to what you've tried, Full Scope Pest Control handles fly infestations across all five NYC boroughs, Yonkers, and Long Island. We identify the source, treat the breeding areas, and give you a clear picture of what's driving the problem and how to keep it from coming back. Reach out to schedule an inspection.