From Tomahawk company:
“New Pest-Blok HD Foundation Vent Covers are now available at Tomahawk Live Trap! These heavy duty vent covers fit over openings of 16″ x 8″ or smaller and are designed to keep out everything from mice to raccoon! ”
Get yours here: Critter Blocker ”
Tomahawk actually has an entire page of humane ways to block openings to your home or building, Exclusion, Prevention, Vent Covers & Home Repair
REMEMBER, ENSURE ALL ANIMALS ARE OUT of the AREA YOU ARE TRYING TO BLOCK OFF!!!