I'm having a gnat problem again and I've been drowning pots and they just...MAJORLY TICK ME OFF!! I JUST potted these plants and they've already begun burrowing in the soil of all of my pots. I feel like giving up...but I've been informed that I can use systemic instecticides, the problem is, I don't know which one to get, I need one that I can get at Lowe's or somewhere like that, I can't order online for it. It this doesn't work..I'm just gonna stick with underwater utrics THAT DON'T HAVE SOIL FOR THE LITTLE (insert angry word here) TO BURROW IN! I'll do that until I can get a really good terrarium to keep them OUT!