I've been battling some relatively slow-moving flying pests and their larvae. Based on my Internet research I'm 90% certain that these are "moth flies".
They are found mostly on the ceiling or on the walls near the ceiling. When they are in a resting state (or when they are larvae) they don't see me coming and they are easy to capture with a napkin. When flying they move a bit slower than flies so I can usually catch them with moderate effort.
The problems I'm having are:
- No matter how many I capture or kill, they keep coming back within a couple of hours - I've currently killed an estimated 200 - 300 of them over the course of a week
- I can't pinpoint their origin
- Fly paper and an indoor UV electric solution perform poorly - I got maybe 10 that way
- I can't use chemical sprays or poisons, because I have a young puppy in the house and I'm not willing to risk it
The Internet led me to believe they probably came from drain pipes, so I bought an insecticide made specifically for drains. Not only did it do nothing, when I went to clean and inspect the sink pipes I somehow created a leak. On top of that, I tried to further clean the sink pipe and make the slow drain fast by buying a high pressure air gun made for that, which somehow made the drain pipes totally clogged (I digress - the point is that this option won't work for me). I don't actually see any evidence that they came from the drains at all.
Any thoughts on how to safely eliminate them and/or where else their source might be? I suppose if I found where they keep coming from I could kill their nest or egg sacs or whatever, but they seem to appear from thin air.