Yes, a properly installed chimney cap with mesh screening effectively blocks birds, squirrels, raccoons, and other animals from entering your chimney. The mesh is fine enough to keep out small creatures but large enough to allow proper airflow. Animals love Providence chimneys because they’re warm, dry, and protected. Once they move in, they can block your flue, damage your liner, and create fire hazards with their nesting materials. A cap stops this problem before it starts. If animals are already in your chimney, we’ll remove them humanely before installing your cap. Sealing them in isn’t safe for anyone.