Kritter Caps are designed to suit contained in the nook posts of a vinyl-sided construction to cease mice, rats, snakes, bees, wasps, hornets and different pests from coming into by means of an open nook publish. The SCI-354 mixture Kritter Cap is common, and can be utilized on 2.75-, 3-, 3.5- and 4-inch nook posts. It’s simply sized by snipping or breaking off sections with facet cutters or pliers. The bottom filler tabs are used for filling voids the place the plywood sheathing or insulation beneath the siding doesn’t come to a sq. nook, and will be eliminated if not wanted.