The ORIGINAL PEST OFFENSE Electronic Pest Repellers Model #:POBD-I-01 Chemical free solution to pest control. This patented technology is an easy and safe solution that requires no maintenance or disposal of rodents or insects. Pest simply leave the home. Effective to rid home of mice, rats, and roaches. Microprocessor creates a force field in your home to prevent insects and rodents from nesting or feeding within the walls by sending electronic pulses through the wiring of the home, random digital cycling prevents pests from adapting to PEST OFFENSE. One PEST OFFENSE unit is effective for one level of the average size home, plug into any 110 volt outlet and simply walk away. Indicator light confirms it is work correctly. Plus has a built-in surge protector and nightlight. PEST OFFENSE is SAFE for: dogs, cats, ferrets, rabbits, birds, fish, snakes, turtles, reptiles, and hermit crabs and PEST OFFENSE is NOT recommended if you own: hamsters, gerbils, guinea pigs, minks, chinchillas, tarantulas, and other similar pets.