Solar Critter Guard is designed to keep birds, squirrels, raccoons, and other pesky critters from making their home under the solar array. The mesh screen is vinyl-coated steel, rigid enough to keep out even the most industrious squirrel. Critter Gaurd will protect your solar asset and keep pesky critters from damaging the wiring or causing electrical arcs on the roof. It also keeps debris out from under the solar array prolonging the lifetime of the new roof.