Here's a very amusing post about one pagan's battle with ants. He starts off refusing to use chemical solutions. Read about his attempts to stick loyal to his values.
There's a similar news story out about a buddhist monestary having problems with ants. Biting ants. Fire ants. Enough to send someone to the hospital. Of course, the monks clearly can't kill them.
We had our own problem with ants in the motorhome whilst in Vegas. They were after our moisture. Go figure. I've never told it as well as that first link, though...