An effective deterrent for critters that want to use your garden as a litterbox, this spiked plastic mat can also be set on window ledges to discourage pigeons and other birds from nesting there. Supplied in an 11”× 81” roll that’s easily cut to size, it has built-in clips that let you lock pieces together in various configurations to fit your space. A simple way to dissuade unwelcome visitors to your garden.