Nullis
Moderator
Great thinking. I'd hate to be doing that every day, though, with more than just a couple plants.
If you don't want to get gnats in the first place I would recommend getting some predator mites. They'll eat anything in the soil they can handle, but they love gnat eggs and larva.
If you don't want to get gnats in the first place I would recommend getting some predator mites. They'll eat anything in the soil they can handle, but they love gnat eggs and larva.