Another thing that comes down vent pipes is rats. They are not as common as frogs in Florida, but elsewhere vent pipes are a great way for them to access your toilet or other plumbing points. Now sometimes they come up the sewer pipe, but if you can eliminate one access point with a Critter Quitter that’s one less way for them to get in. Nobody wants a rat in the house, and I have had several stories of it happening. So get some Critter Quitters and eliminate that way in.