OK Here is my Situation, I have a few raised bed gardens and I noticed this year (after using worm casting that I bought at a local nursery that I have a small population of very healthy-looking worms but I am also getting a population of red fire ants in the same beds. Now normally If the ants were not in the garden beds I would give them a dose of Spectracide. I dont want to kill off my worms but I also dont want the fire ants. any Idea how to get rid of one without killing off the other?