The Bat Cone Excluder is gray in color, approx. 6" in length, with four flexible tabs at one end to attach the excluder over the bats entry/exit point. The bat excluder can be attached using pushpins, staples, duct-tape, etc. Completely re-usable, the Bat Excluder is made of a durable polyethylene and will last for many years. For optimal results mount the Bat Excluder with a slight downward incline.