I'm having serious Drain Fly issues. I volcanoed, but all that seems to have done is drive them out into the open. I got some flypaper but only a few of them have been obliging enough to fly into it. Other than swatting them one by one, do you have any tips for getting rid of them? I checked the tag on fruit flies and I know you said traps don't work, so... what CAN I do?
So, drain flies live on all of the organic stuff that’s in your pipes. So, you need to deal with them at their feeding and breeding grounds. First, figure out what drain(s) they’re coming from. Then, get yourself a pipe brush, and start scrubbing down that drain. This is a kind of gross and fairly labor-intensive process, but necessary. Then, if you’re not morally opposed to drain cleaner, get yourself some Draino or Liquid Plumbr to eat up the rest of the gunk. Nothing to feed on=no more drain flies.
My mother takes a small jar (say from jelly), puts fruit/veggies in, covers the top with plastic wrap and pokes a hole it it. They go in but can’t get out. Not a solution, but will get rid of the ones flying around.