If you buy from me and your purchase doesn't do what is says on the box, simply post it back for a refund (you pay the return postage).
Safe Shopping Guarantee
These ultrasonic Mouse and Rat repellers produce over 100 decibels of ultrasonmic sound at constantly changing frequency levels. The unit operates at frequencies that are too high for humans, cats and dogs to hear, but are within the hearing range of mice and rats. Each unit protects an area of at 37 square metres (400 Square feet) from rodent infestation. Perfect for use in homes, offices, resturants.
UK Postage: FREE