The answer to 'dryer vent pet stains' is that pet hair and dander can accumulate in the dryer vent over time, causing blockages and potential fire hazards. Symptoms of this issue include reduced airflow, longer drying times, and visible pet hair in the vent or lint trap.
For minor pet stains or lint buildup, you can try cleaning the vent yourself using a dryer vent brush or vacuum attachment. However, if the vent is severely clogged or you suspect a more serious blockage, it's best to call a professional dryer vent cleaning service to properly inspect and clean the entire vent system.