Rodent Exclusion
Finding and closing the openings rodents use.
Proofing protects the parts of a building rodents are most likely to use, before or after an active problem.
Short answerRodent proofing is preventive protection: hardening doors, vents, pipe openings, foundation gaps and utility entries so rats and mice have fewer ways in. It overlaps with exclusion but is planned around vulnerable areas rather than one known route.
Ground level doors and cellar entries, vents and screens, pipe and utility penetrations, gaps at the foundation, and basement floor drains. Older buildings usually need more than one visit's worth of thought, because past repairs may have left new gaps.
Exclusion answers a specific problem: the mice in the kitchen and the gap behind the stove. Proofing looks wider, at the building as a whole. Both use materials rodents cannot chew through, and both start with an inspection. See rodent exclusion.
It does not remove rodents already inside and it does not promise a building will stay clear. It lowers the odds and makes any return easier to trace.
Not sure what you are dealing with? An inspection finds the source and sets the scope.
Materials rodents cannot chew through, matched to the opening. That usually means metal mesh or hardware cloth, sheet metal, and cement or masonry fillers for masonry gaps. Foam or plain caulk on its own is not enough because rodents chew it out. The right choice depends on what the opening is, what surrounds it and how it will be used.
Sealing stops mice from using the openings you closed, but only if every route is found and the material holds. Mice already inside must be trapped or removed first, or they stay sealed in with you. Sealing without an inspection tends to miss gaps behind appliances, inside wall voids and around pipe sleeves.
Finding and closing the openings rodents use.
Closing the specific openings an inspection finds.
Where every rodent job starts.
Activity that keeps coming back usually means the source or the entry route is still open. More traps do not fix that. An inspection looks for where they are getting in and what is drawing them.