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Will Expanding Foam Keep Mice Out? [Solved]

Filling the cracks and voids with the polyurethane foam acts as a rodent barrier, as mice and other rodents aren’t able to chew through spray foam insulation. With polyurethane foam, the results are immediate. While it won’t get rid of infestations already in your home, it will prevent them from happening.

Does Spray Foam Keep out Mice, Rodents and Pests? | Foam University

Will spray foam

Why Spray Foam Does Not Keep Out Mice

In this video Jared Houliston from Ontario Wildlife Removal Inc. gives a perfect example of why

Keep Rats out of Large Holes or Gaps Using Great Stuff Pest Block

How to