Customer taking advantage of dryer vent special. Found the dryer vent hard ducted. It was barely attached to the wall. Lint behind the dryer and near the failed connection at the wall. Cleaned out significant amount of lint. Blew 450cfm of air through the vent system. Vacuumed the floor behind washer and dryer and under the sink. Vent is clear and reattached. Secured with foil tape. Recommend upgrading to flex dryer vent with adapter for the wall vent to properly fit the dryer.