Rats can jump vertically 36 inches, horizontally 48 inches, and reach horizontally or vertically 15 inches. Rats can jump 8 feet from a tree to a house if the branch is 15 feet above the roof. Brick with mortared joints. A gnawing edge is the edge of substances which rats can gnaw through. The gnawing edges must be protected with rodent-resistant materials.
Rodents can also enter homes through toilets.
To be effective, rodent-proofing must block all possible rodent entry points. Inspect frequently during this time and promptly repair any breaks. It will also be necessary to eliminate the rodents trapped indoors due to rodent-proofing. Sanitation - Good housekeeping or sanitation is a basic factor in rodent control. Eliminating food, water, and harbourage for rats and mice can reduce rodent populations rapidly.