If those approaches doesn’t work, you’ll have to look under the sink and inspect the elbow trap, also known as a P-trap. “The trap can sometimes be clogged with food residue. If you undo that and clean it out, that can fix the issue,” he says. “If you’re a DIYer, you ...
Sticky Traps: You can purchase yellow sticky cards with the purpose of indoor insect control, these will work with fungus gnats. The idea is that the bright color will attract them and when they come to investigate, they will be stuck or trapped by the sticky substance on the card. Look ...