Let me set the scene.... I have a deck attached to my house that is used for entry into the back door. Near the door I keep a self feeder full of dogfood. It is attracting big red **** roaches (1-2 inches long) and slugs. The slugs don't really bother me much. It is the roaches that are attracted to the food and then are close enough to the door to gain entry to the house. I am a liscenced turf and ornamental applicator. Is there anything I can spray around the deck or on and around the feeder that will repel the roaches? I was thinking Bifen, but haven't done any reasearch yet. Thanks for the help.