@PP3121 mosquito bits is the answer for gnats, but don’t put them in the pots as directed. Soak about a cap full of them per gallon of water filter them out and use the water like you normally would. Wait for a week and do it again then again every time you see more than a couple in a day. I don’t think they’ll ever be completely gone but after a couple doses of what I call bit juice they will be under control 4sure. I’ve used alot of different things said to work and some have helped but nothing compared to using bit juice