I have lots of pot plants in my home and enjoy growing them.I start small ones from cuttings etc and give lots away I get a lot of pleasure from watching them grow to beautiful big plants.Unfortunately I bought a bag of potting mix a while ago that must have contained soil gnat larvae and now I have these little flying insects in nearly every pot.I googled to find out what they were but can't find an easy way to get rid of them.Has anyone had these gnats before and were able to remove them permanently?