apple cider vinegar, put it inn a little cup or something small that will hold it, put plastick bag over top of pot or watever you have holding your pot plants and poke little holes inn it. and put it on top of your and the knats will go inn there and not kno how to get out lol... stuuuuupid ass knats!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!