Recently we've found bed bugs in my place, harmless except for the red spots of irritation on hands and arms after they've vampired you at night. But there is a way to kill them without chemicals, it's micro-organisms that eat bugs, that's how these micro's survive, so I didn't feel bad getting rid of these nuisances in a completely natural way. Of course you can't eat the micro-organisms either or you'll get sick for a few hours but that's easy, you just don't lick the floor! LOL