A popular item in most hardware stores are cans of spray foam. These cans function very well in sealing cavities and crevices around all sorts of items. From plumbing to HVAC spray foam finds a purpose; but what about pest control?
Critters that are in search of a place to live and find cavities on peoples homes don’t need much encouragement to seize the opportunity to establish a shelter. A common idea is to spray a can of expansion foam into the hole and exclude the critter from entry. Theres no questions that spray foam does a terrific job of filling holes and cavities. The question is “does spray foam offer sufficient protection to keep critters out”?
When it comes to certain critters, yes! With bats for instance, spray foam can be used to exclude them from re entry after first flushing them out. However, with critters like squirells or raccoons they typically will chew and tear their way through the foam to regain entry. We have witnessed squirrels and raccoons tearing and chewing through solid wood and metal repairs to re-enter.
Depending on which critter you’re trying to exclude, spray foam may or may not be a viable option. Always remember to ensure the critters are removed before installing any type of seal. Lastly, repairs take time, energy and resources. It would be unfortunate to see all of ones spray foam seals chewed open the very next day. Contacting a professional first can help ensure the right products are being used for your situation.