Get rid of rats and mice with Lentek Pest Contro Ultrasonic 500 Model PR30 . Silent ultrasonic pest repeller technology helps drive out mouse and rat pests. Plug in Pestcontro rodent repeller units in indoor living areas as part of a total rodent pest control program. Use electronic repellers in homes, apartments, garages, offices, warehouses and restaurants. Pestcontro Ultrasonic Technology: Effective temporary relief from mice and rats in indoor living areas. Sounds are above the normal hearing range of dogs, cats, snakes, fish, birds and humans. No effect on electronic appliances like computers and tv sets. Lentek Pestcontro Ultrasonic Pest Repeller Model PR30-3C Directions: Plug into an un-switched wall outlet not obstructed by furnishings. If possible, position ultrasonic pest repeller units to establish a richochet bounce pattern: position across from hard reflective surfaces like walls, mirrors and appliances. Open doors into rooms where Pestcontro mouse repellers are installed. Note: Ultrasound cannot transmit through walls and doors. Use Lentek’s ultrasonic mouse repellers in conjunction with current pest control method for best results. Install at least one mouse or rat repeller unit in each average sized room. Install additional units in larger areas and multiple floor structures. Caution: Use indoors only. Avoid exposure to direct sunlight or water to avoid risk of fire or electrical shock. Note: Avoid use around pet rodents and rabbits. Suggestions for Friendly, Safe Ways to Get Rid of Rodents in Your Home: Restrict ways for rodents to enter, nest, eat and drink in your home. Put tight lids on garbage and loose food, repair plumbing leaks, drain liquid from recycling cans and bottles, remove pet dishes at night. Recycle paper and cardboard regularly to eliminate nesting places. Maintain home landscaping to reduce nesting areas like tall grass and leaf piles and to reduce pathways indoors via tree branches and shrubs. Screen all vent openings in c