If you’ve ever noticed small, fuzzy flies hovering near your sink, shower, or floor drain, you may have met the drain fly—also called a moth fly or sewer gnat. While they might seem harmless, their presence often points to a hidden issue in your plumbing or sanitation system. In Florida’s warm, humid climate, these pests can multiply quickly, making early action essential.
What Are Drain Flies?
Appearance: About 1/16 to 1/4 inch long, with fuzzy, moth-like wings covered in fine hairs.
Behavior: Weak fliers that tend to hop or flutter short distances.
Breeding Grounds: Organic buildup inside drains, standing water from leaks, and other damp, decaying material.
Activity: Mostly nocturnal, but you may spot them during the day resting on walls near drains.
Where You’ll Find Them in Florida Homes & Businesses
Drain flies thrive anywhere there’s stagnant water and organic matter, including:
Kitchen and bathroom sink drains
Shower and tub drains
Floor drains in laundry rooms or garages
Leaky pipes under sinks
Outdoor drains, septic tanks, and compost areas
Why You Shouldn’t Ignore Them
While drain flies don’t bite or sting, they can:
Indicate plumbing leaks or drainage issues
Spread bacteria from the unsanitary places they breed
Trigger allergies or respiratory irritation in sensitive individuals
Multiply rapidly—females can lay up to 300 eggs in just 48 hours
How to Prevent Drain Flies
Keep drains clean and free of organic buildup
Run water weekly in rarely used drains to prevent stagnation
Repair leaks promptly
Use drain covers to block entry points including overflows
Schedule regular plumbing inspections
How Pestherapy Inc. Can Help
At Pestherapy Inc., we know that drain flies are often a symptom of a drain problem.
Our approach is thorough, targeted, and designed for Florida homes and businesses:
Detailed Inspections – We identify breeding sites.
Targeted Treatments – We use safe, effective methods to eliminate adult flies, larvae, and eggs.
Sanitation & Prevention Guidance – We’ll help you correct the conditions that attract drain flies.
Family & Pet-Friendly Solutions – Our treatments are designed with your loved ones in mind.
Local Expertise Since 1995 – As a family-owned company serving Manatee, Sarasota, and surrounding areas, we understand Florida’s unique pest pressures.
Bottom line: Drain flies may be small, but they’re a warning sign you shouldn’t ignore. With Pestherapy Inc. on your side, you’ll get fast, effective solutions that not only remove the flies—but also address the root cause so they don’t come back.
Call us today at 941-351-8412 or click here to schedule your no obligation inspection and reclaim your sinks, showers, and drains from these unwelcome guests.