We offer dryer vent cleaning! Your dryer vents should be cleaned every year to maintain efficient drying, prevent dryer failures, and help prevent lint buildup that can lead to lint fires.
While the vent on the right might be an exaggeration (looks like a new vent) the vent on the left is not. I have seen some very clogged vents and a fellow appliance repair man recently found a birds nest with eggs in a vent!