Phillip HAS MOVED INSTANCESA watering can was a great purchase 😍
Side note: any other plant parents have tips on dealing with fungus gnats? My snake plant seemed to be in remission for a long time, but I think the gnats just stopped breeding when they were out of season.
I think I may go pick up some sand to put on top of the soil and see if that helps but I am getting pretty close to my wits end and throwing out the problematic plant is not off the table :(
Edit:
Thanks everyone! I’ve got plenty of options to try now. I’ll post an update with how everything goes. Thank you so much for the boost @jerry that was very helpful 😃
SergeantScar@pb4000 ... We have usually resorted to throwing plants.. I think I successfully saved 1 plant from them by doing a full repot where I hosed everything off of the roots..
WiGLEnet@pb4000 an online nematode purchase worked for us! (Yeah, it’s weird)
Zeljka Zorz@pb4000 i put my euphorbia trigona outside for three days, in dry weather, in the shade. It did the trick.
Tevruden Dawnspear@pb4000 I've done both mosquito dunks (Bacillus thuringiensis israelensis) and the nuclear option of permethrin.
Both work, the first takes a bit longer-- the second you should only do if you can guarantee it won't come into contact with any pets after you spray.
Michael Meese 🇪🇺@pb4000 I know the struggle, especially when some plants come inside for the winter. Depending on the intensity of the infestation, there are several approaches: if the plant can tolerate it, let the earth dry out for as long as possible or in bad cases replace it. Then we have in Germany “Yellow Cards”. They are plastic cards covered with a very sticky surface. The idea is to catch slowly all the flies by putting some around the plant, but takes some time. 1/3
@pb4000 Then, what I haven’t tested yet: Water the plants with cold coffee. The caffeine allegedly kills the juvenile maggots of the flies in the earth. Same should also work with nicotine from a tea brewed of tobacco. You can use cigarette buts, if you have a smoker around. But that smells horrible and I would get some cheap cigarettes or other tobacco. Also what could work, use brewed coffee ground and mix it in the top layer of the earth. 2/3
@pb4000 And there is biological warfare: You can get nematodes for gardening purposes. You activate them in water and water the plants with the solution. The little carnivores will kill off the juvenile maggots of the flies in the earth. Good luck! Hope you can get rid of these little fuckers. In any case I would advise the use of the yellow card. At least you can check this way, if your efforts had been successful. And if possible, put the infested plants into solitary. 3/3
@pb4000 Just remembered something! Coffee ground will probably not work. I once had a plastic bag of pure coffee ground infused with mushrooms mycelium to harvest your own mushrooms at home. After the second harvest it got infected with fungus gnats… Their larvae had a field day with it.
Phillip 
Dan@pb4000 Someone else already mentioned it, but nematodes is the answer. Had outbreak in the office, watered with nematodes. 3 days later, zero fungus gnats.
Ryne Hager@pb4000 Gonna sound weird, but: mosquito dunks in your watering can. Kills the early lifecycle gnats over time but not any other beneficial fungi/bacteria, harmless to pets. Smells funky though.
@pb4000 Also recommend putting some dunk-derived liquid from the can down the drains once in a while. They can hang out in your u-bend down there and come back over time from their hidden little colony.
Jerry 🦙💝🦙@pb4000 I don’t have many redeeming qualities, but I do have a lot of followers so I like to try to help people where I can with boosts