Protecting our precious fish from predators is a challenge every summer but heres an exciting new solution far less of an eyesore than netting fishing line or plastic heron decoys this motion activated repeller is unobtrusive yet effective and needs no installation every time its solar powered pir detects movement it triggers a bright flashing led and a choice of sounds bird of prey barking dog gunshot or high pitched squeal it can also be used to chase animals away from your garden