CAT STOP POND PROTECTOR uses ultrasonic sound to easily and safely deter cats from your pond and garden.
the harmless sound frequency is pitched to cause maximum irritation to even the most belligerent feline, but doesnt cause sound nuisance to either you or your neighbours, and is inaudible to birds.
One unit protects approximately 330 square feet and will operate for up to nine months on one standard 9 volt battery. However, a mains battery is also available.