Drain Flies Pest Control Grafton
Drain Flies Pest Control Grafton Solutions
Drain flies pest control Grafton is a service we handle often — because these tiny, persistent insects can be a real nuisance. They hover around sinks, showers, and drains, and no matter how often you clean, they just keep coming back.
If you’re dealing with a constant swarm of small, slow-flying bugs in your bathroom or kitchen, you’re not alone. These are likely drain flies — also known as sink flies or sewer gnats — and they can be surprisingly tough to eliminate without professional help.
Detecta Pest offers safe, effective treatments to stop infestations at the source and keep your home clean, clear, and fly-free.

Request A Free Quote Today!
*Prices based on a 3 bedroom slab home & Includes GST.
Prices may vary due to location, size of structure and building design. Call for free quotation.
What Are Drain Flies?
Drain flies are small, fuzzy insects with moth-like wings. Despite their harmless appearance, they’re a real pest when they begin to breed in your drains or plumbing systems. They feed on the decaying organic matter inside pipes, and once established, they reproduce quickly — laying eggs in scum, sludge, and even in hard-to-reach areas like overflow holes.
Other names for drain flies include:
- Sink flies
- Sewer flies
- Moth flies
- Filter flies
They’re attracted to moist, dirty environments and can breed in bathroom drains, kitchen sinks, floor drains, and even in mop buckets or near air conditioning units.
Signs You Have a Drain Fly Infestation
- Small, dark flies hovering near drains, sinks, or bathtubs
- Tiny black spots on tiles or walls (excrement or resting flies)
- Bad smells from drains, often accompanied by visible slime
- Frequent reappearance even after cleaning
- Larvae visible in drain scum or sludge (they look like tiny worms)
Drain flies are often mistaken for fruit flies, but they are slower-moving and fuzzier in appearance. If you’re seeing them consistently near wet areas, they’re most likely breeding in your drains.
Our Drain Fly Control Process
At Detecta Pest, we don’t just treat the surface — we go after the breeding sites to stop the problem at the source:
- Inspection and Source Identification
We locate where the flies are breeding — usually inside drains, shower grates, or floor waste traps. We assess the level of infestation and identify all risk zones. - Deep Treatment Application
We apply targeted foaming treatments and biological cleaners to break down the organic matter where eggs and larvae thrive. We also treat overflow cavities and pipe bends — common hiding places for larvae. - Surface Treatments (if required)
For persistent infestations, we apply safe, residual treatments around breeding zones, wall edges, and tiles where adults may rest. - Prevention and Advice
Once the infestation is under control, we provide expert advice to help you maintain drains, reduce moisture, and prevent re-infestation.
Most customers see a huge drop in activity within 48 hours, with full control achieved after the life cycle is interrupted.
Why Do Drain Flies Keep Coming Back?
Drain flies return for a few reasons:
- Sludge or biofilm builds back up in pipes
- Eggs or larvae survive inside unreachable areas
- Moisture issues remain unresolved
- DIY cleaning fails to target the deeper pipe system
Their larvae can resist basic chemicals and even survive thermal changes. That’s why simple surface cleaning isn’t enough — the breeding sites must be treated professionally.
Where We Commonly See Drain Flies in Grafton
- Kitchen sinks and bathroom drains
- Shower grates, especially in tiled wet rooms
- Floor waste in laundries or cafes
- Overflow holes in basins and tubs
- Around air conditioners and fridge drip trays
Garbage disposal and mop buckets

Quick Drain Fly Facts
- They can lay up to 300 eggs at a time
- Eggs hatch into larvae within 48 hours
- Larvae can survive in harsh drain environments and feed on sludge
- Adult flies live for 1–2 weeks, but the infestation continues through breeding
- Cleaning drains doesn’t eliminate eggs embedded in slime layers
Book Drain Flies Pest Control Grafton Today
If drain flies are making your kitchen or bathroom feel dirty — despite your best cleaning efforts — it’s time to bring in the professionals. Detecta Pest has been helping Grafton locals for over 20 years with effective, affordable pest control that works.
We’ll find the source, stop the breeding, and give you clear advice to prevent it happening again.
Pricing depends on property layout and the severity of the infestation. Contact us today for a fast quote and peace of mind.
Request A Free Quote Today!
*Prices based on a 3 bedroom slab home & Includes GST.
Prices may vary due to location, size of structure and building design. Call for free quotation.