Keeping pests out of your home can be a constant battle, and one of the often-overlooked entry points is your bathroom fan.

While these fixtures are designed to ventilate moisture and improve air quality, they can also inadvertently provide a pathway for unwanted critters to infiltrate your living space.

Insects, rodents, and even small birds have been known to find their way through bathroom fan openings, seeking shelter, warmth, or a source of food.

Gaps and cracks around the fan housing can allow access, and loose or damaged ductwork can create additional entry points. - https://bathroomstylish.com/blog/can-bugs-get-in-through-bathroom-fan/?unique_id_73648kth

"Combating Bathroom Invaders: How to Prevent Pest Infiltration through Ventilation Systems"