Here are two new reviews from Home Depot.
Feb 4, 5 stars

Squirrels had destroyed the lead flashing on my roof vents. I used four small and one large Critter quitter to repair all of the vents. Easily installed by cutting the roof angle and placing over the vent. 4 screws and you are done. Nothing could be easier. Sturdy, high quality material. Saved me a ton of money in repairs. Highly recommended!

Feb 4 also 5 stars
A great simple solution for lead vent flashing damage done by squirrels.

We have 80 reviews, which isn’t bad for a roofing product that goes on plumbing vents.