Bumble Bee

Clothes Moth

Drain Fly

Fruit Fly

Honey Bee

Horse Fly

House Fly

Mud Dauber

Paper Wasp

Drain Fly


Technician Treating Drain

Drain flies range from light gray to tan body and are about 1/16 inch long. The flies appear fuzzy because both the body and the wings are covered with long hairs.  For this reason, they are also known as Moth Flies.


Drain Flies prefer the dark and are usually found on walls close to moisture sources.  They lay their eggs in organic build-up typically found in drains.  The larvae can survive extreme temperature swings and low levels of oxygen.  They have jaws that enable them to burrow deep into layers of sludge and build-up.


Sanitary improvements are most effective when dealing with Drain Flies.  Drains should be thoroughly cleaned.  A common misconception is to poor hot water and bleach down the drain. This will have effect as the larva burrow deep into organic build up.  There are several micro biological enzymes that can be used to maintain clean drains.  These products eat away slime and sludge.  Space fogging to knock down adults is not effective, the breading sites must be eliminated for control.

Fun Fact:

In small numbers, Drain Fly Larvae are considered helpful because they break down materials that cause drain clogs.