Product review (5 stars): The vent guard is great for bathroom vents but use caution on the dryer ...
This product is a simple way to keep birds out of your vents. I installed the vent guard on my bathroom vent lines but I would be cautious about doing so on the dryer line. Lint builds up in dryer lines and I'm not so sure lint can escape the vent with this guard. I just cleaned my dryer vent line and had a build up of lint at the exit where the bottom flap of the louvers was deformed from heat. Just make sure you don't create a fire hazard and check the line for build-up of lint if you decide to install on the dryer vent. The vent guard is great for bathroom vents but use caution on the dryer line. Maybe GJS can work on a dryer specific design that will keep birds out and allow lint to escape.