Keep mice out with Tomcat® Rodent Block Expanding Foam Barrier. This insulating foam sealant expands to take the shape of gaps and cracks to block mice from coming inside your home. It is the pesticide-free way to create a rodent barrier and provides a long-lasting, airtight, and water-resistant bond to most building materials. Spray Tomcat® Rodent Block Expanding Foam Barrier in crevices inside and outside your house, including the garage, attic, basement, and foundation. It can be trimmed, sanded, and painted if desired. To use, shake well, firmly screw the included straw onto the valve stem, then spray foam. When done, bend the straw back and press tip fully over the seal on the back of the trigger. To reuse straw, cut, discard tip and cured foam near the end of the straw. Bend the straw back to a straight position and spray foam. The recommended usage temperature of Tomcat® Rodent Block Expanding Foam Barrier is 60 to 90°F. See product label for complete instructions.