Unwanted Animals- such as Cats, Dogs and Foxes can become a problem in your home and garden causing damage and spreading disease. Keep your home and garden free of any unwanted animals by using the Ionic Animal Repeller. This device can cover up to 2,500 square feet by powerfully producing over 140 decibels of high frequency sound, which is inaudible to humans but will deter even the most persistent of pests. Not only will the animal repeller warn off animals but can also create a stream of beneficial ions which pull pollutant and bacteria out of the air, making your air cleaner to breathe. This device uses a 9V DC adaptor (not included).