Deck-Guard Ultrasonic Bird Repeller
The Deck-Guard Ultrasonic Bird Repeller offers a simple, hassle-free solution for keeping birds off your boat while she sits on the mooring and awaits your return. The Deck-Guard system uses ultrasonic sound waves (that aren’t audible to most humans—think dog whistle, but for birds) to annoy the heck out of winged would-be deck defecators. The units are activated using motion sensors (they have a 15-foot vertical range and a 30-foot horizontal range), so they are only in use when they need to be. They are powered with a rechargeable battery pack with solar panels as well for added longevity.