Contech Mini ScareCrow Automatic Pet Deterrent The Mini ScareCrow automatic pet deterrent safely and humanely protects your porch, patio, potted plants, and countertops Safely keeps cats away from protected areas Detects motion up to three feet (one meter) away Combines sound with compressed air for a harmless, odorless deterrent Operates up to 200 times on a single, replaceable canister of compressed air