Ursus Industries sells a product called BIRDSTOPPER. BIRDSTOPPER is the only detterent where birds never adapt to and the birds are unharmed. The gunwales stay clean, thus eliminating the chore of constantly having to remove bird droppings as well as the health hazard of contact with bird-borne parasites and diseases.
VERY CHEAP AND AFFORDABLE. Log onto ursusindustries.com.au and order your BIRDSTOPPER today!
Simple DIY kit.