The heron is becoming an ever increasing threat to all fish in the garden pond the solution is the westfalia heron scarer no matter what animal you want to get rid off the heron scarer effectively solves this problem simply connect to a water hose and adjust the required length the westfalia heron scarer is then ready to operate by means of the built in movement detector a rotating approx 100 jet of water is activated which keeps surveillance over your pond inhabitants after 5 seco