I had a gentleman call me the other day wanting to order some Critter Quitters. It turns out he had 3 vents that were leaking with one causing ceiling stains. He had called a roofer to fix them. The roofer wanted 5000 dollars to repair the “damage.” He bought 3 Critter Quitters for under 100 dollars and the roof is fixed. I couldn’t believe it, but he showed me the quote. So do yourself a favor and when a roofer quotes you a vent repair, consider ordering some Critter Quitters instead.