Biocontrols brotha!
Check out predatory mites, californicus and persimillis are my good friends in growing organic.
They come in sachets you can hang from plants, or lay on soil.
Nothing better than a bite, Granny is right, you can get Bacillus Thuringiensis in those mosquito bits, they work as well. They need to stay wet, persimillis will crawl around, check out my diary, I took a photo of a predatory mite..
Check out this website, great resource for all things living soil, the owners name is Tad Hussey and has an amazing podcast with real science, not the "bro science" which is all over the web.
https://www.kisorganics.com/collections/target-fungus-gnats
I highly recommend predatory mites, they have truly been my only solution to the never ending fungus gnats.
❤️ The Fatty McCoy