Detect and deter cats from lawns, flower-beds and bird feeders using the Mega-Sonic® Cat Repeller. The motion-activated repeller detects animal movement and delivers a continuously variable sonic burst to deter cats without harm. Coverage area is up to 12 metres in an 80º arc, creating a protected zone of approximately 100 square metres. The dual outer casing with internal rubber seals gives guaranteed water resistance providing garden protection year-round.