Mega Sonic Cat Repeller Deter cats from entering your garden without harming them with the Mega-Sonic Cat Repeller, designed to emit an ultrasonic sound that's uncomfortable for cats. It has an impressive 100 sq.m coverage so it's great for large gardens and has a built-in motion sensor so it's only activated when movement is detected. It can be mains or battery operated and is easy to install thanks to the mounting stake, plus the dual outer casing and rubber seals ensure it's fully water resistant. 100 sq.m coverage Mains powered or requires 2x 9V batteries (available separately) Dimensions: H21.5 x W13 x D10cm Assembly required (approx. 5 mins)