Electronic Ultrasonic No Mats, No Chemicals, No Sprays. No Fumes, No Daily Expenses, No Smells. Portable, Easily Fits Bags. Durable, Long Lasting Heavy Duty Product Repeller Device Does Not Kill The Rodents, Cockroaches, Spiders, Ants But Drives Them Away Light Weight, Weigh Less Than Average. Skid Proof Design, Great Handling. Easy to Use, Easy to Operate Effective on Mice, Bugs, Lizards, Spiders, Mosquitoes & Pests. Plug and Play, Use 2-3 weeks to get god result.