10' x 10'  3/8" netting

Special knotted netting just for bats. This 3/8" polyethylene knotted mesh is ideal for all bat species, and is far stronger than other nets available. The black mono-filament withstands ultraviolet radiation extremely well, and is very hard to see when installed in shadowed areas. Another great feature is the large sizes available so any bat exclusion is possible with a single sheet, eliminating the need for seams.

Lightweight, flexible plastic netting can be used to form a one-way valve over openings on smooth surfaces of exterior walls or attic louvers. Secure the top and sides of the netting, as shown in the diagram. The netting should extend 18 to 24 inches (46 to 61 centimeters)below the lower edge of the opening with the bottom hanging loose. The netting should remain in place for a minimum of five to seven days to ensure all bats have left. Then openings should be permanently sealed with silicone caulking, caulkbacking rod, hardware cloth or heavy-duty netting. In some cases, sealing may require repair or replacement of old, deteriorated wood. When bats are using multiple openings to enter and exit, exclusion material should be placed on each opening. If they do not appear to be exiting or seem to be having trouble doing so, add new valves as needed.