Hole Size Checker
Slide a gap from a quarter inch to six inches and see which animals can squeeze through, to scale.

These are common rules of thumb for the smallest gap each animal can use. Animals chew, claw and push at soft materials until a gap fits, which is why steel mesh and metal are used for real repairs.
Three quick steps
- 1Slide the gapFrom a quarter inch to six inches.
- 2Pick the materialSoft materials can be widened, metal and masonry cannot.
- 3See who fitsAnimals that can use the gap light up.
About the hole size checker
Are these exact sizes?
They are common rules of thumb for the smallest gap each animal can use. Real animals vary, and they can enlarge soft openings.
Why does material matter?
Chewing and clawing widen wood, foam and thin screen. Steel mesh and masonry hold their size.
What should I fill gaps with?
Steel mesh, metal flashing and hard sealants. Foam and plastic are chewed through.
Services that go with this tool
Rodent ProofingSeal every gap mice and rats use to get into your home.Open the file FILE 133Exclusion
Home Exclusion and SealingA full seal-up of the roof, eaves, vents and foundation so wildlife stays out.Open the file FILE 138Exclusion
Foundation and Wall SealingSeal cracks, pipe gaps and foundation holes that let rodents and animals in.Open the file Ready to take your property back from the wild?
Contact Wild Factor Wildlife today. Call or text, or send the form for your free estimate, and the adventure starts.
