We always advise our clients and customers to never proof up or seal entry points with expanding foam!
These are the reasons why - Rats can gnaw through foam within a matter of seconds biting 7 times per second with an average 7000 psi in pressure. Not only can they chew through expanding foam they will then use it as nesting material for warmth and to raise their young.
Atlas Environmental Services Ltd attended site today for our routine inspection - Our thoroughness on our inspections highlighted this issue to our client - We then provided a long term solution to prevent re-occurance of rodent ingress.
"East Lancashire's Solution for Pest Management, Control and Prevention"