The Defender® Narrow Plastic Pigeon Spike is a great little invention for getting rid of pigeons from your home. Any narrow ledge, sill, or beam that has a depth of up to 7.5 cm (3 inches) can be protected from perching, roosting, or nesting pigeons and birds. As they are made of clear polycarbonate plastic, they becomes virtually invisible once installed. They are also UV stabilised and come with a 15-year warranty, so will continue protecting your property for years to come.
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