We have had a pickup of orders on Amazon. There have been a few reviews. Here they are. Both 5 stars. Go check them out.
Squirrels ate the lead on my vents and these were great to slide over to repair. Fairly east to install. I live in Florida so I’m curious how this plastic will hold up. I have a guy clean my dryer vent every year, so I’ll have him asses the Critter Quitters
Solid heavy grade plastic and super easy to install if you start screws before you get on the roof. Then tighten screws 5-7 turns at a time and alternating sides until tight. Squirrels ate the lead vent pipes shortly after we got brand new roof. Very happy with this product!.