Hey Bobby, does it tickle when they crawl on you?
Here is what I found a couple years back when we got them:
[h=3]Biology of Drain Flies[/h]
Moth flies (Drain Flies) develop by complete metamorphosis. The entire life cycle ranges from 8 to 24 days.
Moth flies (Drain Flies)lay eggs in a mass of 30 to 100 in a suitable medium. These eggs hatch in less than 48 hours. The eggs form the moth fly( drain fly) are laid in irregular masses in such places as dirty garbage disposal units, water traps in plumbing fixtures, sewage plant filters and almost any where decmposing organic materials are found.
The larvae and pupae of the moth fly live in the thin gelatinous film found in drains, septic tank field lines or filter stones. The larvae feed on sediment, decaying vegetation and microscopic plants and animals. The larval stage lasts from 9 to 15 days before pupating.
The pupal stage lasts from 20 to 40 hours. The newly emerged adult fly is sexually mature on emergence and copulates within the first few hours of its life.
The moth fly (drain fly) is a poor flyer and may be commonly seen walking or running on walls and other resting surfaces. When they fly in short jerky lines, they fly for only a few feet.
During the day the moth fly (drain fly) adult rests in shaded areas or on walls near plumbing fixtures or on the sides of tubs and showers. Most of the activity of the moth fly (drain fly) occurs during the evening. They may be seen hovering around the sink areas in your home at this time.
As you see they can be a nuisance. I control ours by using a product called Dijest-It Super concentrate. It works on the thin gelatinous film mentioned above. So far we haven't had any problems since. FWIW, you can spry insecticide and kill the adults, but that's a battle you won't win.
