How To Get Rid Of Drain Flies

Getting rid of drain flies (also known as moth flies or sewer gnats) can be tricky because the adults you see are only a symptom—the real problem is the organic buildup inside drains where they breed. For a homeowner or business owner trying to eliminate them on their own, the best approach is a combination of cleaning, prevention, and monitoring:

Identify the Source

Drain flies usually come from slime buildup in sink drains, floor drains, sump pits, or even condensate lines from appliances.
To confirm which drain is the source, place a piece of clear tape sticky side down over the drain opening at night. If flies are caught underneath in the morning, that’s your problem drain.

Clean the Drains Thoroughly

Manual cleaning: Use a stiff, long-handled brush or plumbing snake to scrub the inside of the drain pipe, especially around the P-trap, where organic matter collects.
Boiling water flush: Pour boiling water down the drain daily for several days to help loosen buildup.
Baking soda & vinegar flush: Pour ½ cup baking soda followed by 1 cup vinegar into the drain, let it fizz for 15 minutes, then flush with hot water.
Drain gel cleaners: Use a bio-enzymatic drain cleaner (not harsh chemical drain openers) that breaks down organic matter where flies breed. These cling to pipe walls and work over time.

Eliminate Adult Flies

Use a vacuum or fly swatter to reduce adult populations.
Sticky fly traps near problem areas can help capture adults while you clean drains.

Prevent Future Infestations

Keep drains clean and free of standing water.
Run water in rarely used drains weekly to prevent them from drying and collecting organic scum.
Fix leaky pipes and clean up damp areas since drain flies can breed in any moist, organic-rich spot.

The best DIY way is to identify the breeding drain, scrub it thoroughly, use enzyme-based cleaners to remove buildup, and kill adults with traps or vacuuming. Consistency is key, since eggs and larvae can survive if even a little buildup is left behind.

The Best Way To Get Rid Of Drain Flies

Our professional pest control is the most effective way to eliminate drain flies because these pests are often a symptom of a larger sanitation or plumbing issue that homeowners or business owners may not fully address on their own. While DIY methods can provide temporary relief, our professionals bring expertise, specialized equipment, and proven treatments that ensure the infestation is eliminated at its source. Here’s why hiring our experts is the best solution:

Accurate Source Identification

Drain flies don’t only breed in obvious sink drains—they can also come from floor drains, cracked pipes, grease traps, sump pits, or even hidden wall leaks.
Our pest control technicians know how to conduct thorough inspections, use traps, and detect less obvious breeding sites that DIY efforts might overlook.

Specialized Cleaning & Treatments

Our professionals use industrial-grade bio-enzymatic drain gels, foaming agents, and flushing systems that penetrate deep into drain lines, coating every surface to break down organic matter where flies lay eggs.
These products are stronger, longer-lasting, and more effective than retail cleaners.

Addressing Hidden Plumbing Issues

Many drain fly infestations are tied to damaged or leaking pipes, which create breeding sites homeowners can’t access. We often work alongside plumbers to locate and correct these hidden problems, ensuring flies don’t return.

Integrated Pest Management (IPM)

Our professionals won’t just “kill the flies.” We develop a comprehensive plan: cleaning drains, applying targeted treatments, removing adult drain flies, and recommending long-term sanitation and maintenance practices to prevent re-infestation.

Fast, Reliable Results

DIY methods often take weeks and require repeated treatments. Our professional services dramatically shorten the timeline, quickly restoring sanitary conditions—especially critical for businesses, restaurants, healthcare facilities, and other customer-facing environments.

Our professional pest control is the best way to get rid of drain flies because our experts find the breeding sites, use advanced products and methods, resolve underlying plumbing issues, and deliver long-term prevention strategies. This guarantees a more thorough, lasting solution compared to trial-and-error DIY attempts.

Get Rid Of Drain Flies With Miche Pest Control

Hiring our team of professionals at Miche Pest Control is an investment in long-term protection, expertise, and peace of mind. Here’s why:

Personalized Service and Local Expertise: We know the specific pest pressures in the area—such as seasonal rodent activity, regional ant species, or local termite threats. Our technicians understand the environment, climate, and building types common to the area, allowing them to provide targeted, effective treatments.
High-Quality, Comprehensive Solutions: As a full-service provider, we doe’t just treat surface problems; we address the root causes. From inspections and prevention to exclusion and ongoing maintenance, we deliver complete, integrated pest management (IPM) programs designed to both eliminate infestations and prevent future ones.
Accountability and Reliability: We live and die by our reputation. We rely on trust, referrals, and repeat business, meaning we're committed to doing the job right the first time and providing exceptional customer care.
Faster Response Times: We respond quickly to emergencies and schedule services sooner than large, national chains. Especially when you’re dealing with urgent pest issues like rodents or wasps, that speed matters.
Customized Treatment Plans: We tailor our services to your property’s specific needs instead of using one-size-fits-all chemical treatments. This results in safer, more effective pest control that minimizes environmental impact and reduces unnecessary pesticide use.
Highly Trained, Experienced Technicians: We invest in training, certification, and continuing education for our technicians. We stay current on the latest pest biology, control techniques, and safety standards.
Long-Term Prevention and Value: Our focus on providing quality service means fewer callbacks, longer-lasting protection, and better value over time. Instead of repeated, temporary fixes, you get strategic solutions that protect your home or business for the long run and provide better peace of mind.

Hiring our team means you get expertise you can trust, faster service, safer and more effective treatments, and long-term results that protect both your property and your peace of mind. Contact us today!