I don't like sprays,either-tried the bait station things--NO GOOD AT ALL.The ants and roaches-waterbugs-whatever just turn their noses up at them.With the door locked-they still get in-esp the ants-these are small enough they could climb thru the screening-but an interesting idea.Since I have to rinse and scrape-no more roaches in the machine at least.Sometimes the ants.The creatures seem to like me-just wish they would stay outside.Buildings and houses are for people--The GREAT OUTDOORS is for creatures!The vacuums await for them,though!