Product review (5 stars): Works great - keeps the small critters out
We were having problems with mice getting into our old flapper style dryer vent. We weren't even aware they were coming in there until we bought a new high-efficiency clothes dryer that is sealed and doesn't allow mice to escape if they do get in the vent. Two dead mice in the dryer in a year prompted a look for a critter proof vent. This one does the trick! It also vents well and keeps the cold air out when the dryer's not running! A winner! Highly recommend !