Product review (3 stars): Not a set it and forget it item.  Needs regular attention.
Don't get me wrong, the product is easy to install and it does it's job, but it's in no way a set it and forget it item.
The screen to keep animals out of the vent catches larger pieces of lint and collects in the screen.  So just keep an eye on it, the screen is super easy to remove and replace, just know to keep an eye on it.