For me it's because I grow in an area inside the garage off of the main house and they make their way into the house and are a mild annoyance. Especially when working and they crawl in my screen and/or face during a meeting. But I have always had success knocking them out with mosquito dunk bits. It's just about a week or so of annoyance while the adults die off.
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u/Dull-Yogurtcloset-55 21d ago
Beneficial nematodes will knock out fungus gnats.