Signs near the exterior outlet
Watch for nesting material, repeated bird activity, a flap that will not open, lint packed around the hood, or very weak exhaust.
Wildlife rules can matter
Active nests, eggs, protected species, and removal methods may be subject to rules. Do not assume every vent cleaner can remove an active nest.
Preventing another blockage
After safe removal, an appropriate termination may discourage reentry while preserving airflow. Fine screens can trap lint and may not be suitable.
Common questions
Before you request help
Should I remove a nest myself?
Avoid unsafe ladders, roofs, active wildlife, and pushing material deeper into the vent.
Can snow block a dryer vent?
Yes. Low wall outlets can be obstructed by snow or ice.