Keeping the Critters at Bay Pigeons and squirrels (or other critters) nesting beneath systems can cause significant and costly damage to roofs as well as the solar systems themselves. Our custom designed hardware allows installers and DIY homeowners to quickly, easily and affordably close off their systems from infestation, while preserving the panel manufacturer's warranty. High-quality, black, PVC coated screen and specialized attachment hardware are available on our online store and from select solar and electrical distributors.