Signs of Raccoons in the Chimney Raccoons commonly nest in chimneys. While many homeowners place specialized caps on their smokestacks for this very reason, raccoons are able to gain entry by removing them manually. As such, noticing a cap out of place points to the presence of raccoons in chimneys. Chattering, scratching, and rustling coming from chimney flues also serve as signs of infestations. Sightings of raccoons in chimneys or on rooftops should also incite concern. Damage In addition to forcibly removing chimney covers, raccoons tear or remove shingles and fascia boards lining roofs in order to gain entrance, which can cause ceilings to leak. As raccoons commonly break into chimneys to raise young, noises like squeaking, purring, rustling, and whining are often heard through the night when infestations are present. Finally, since raccoons are known carries of diseases such as rabies and distemper, their presence causes health concerns. They also play host to smaller pests like fleas, ticks, and lice, and their droppings can contain the deadly parasite, raccoon roundworm. Removal Since the pests become hostile if threatened or cornered, individuals should use extreme caution when confronting raccoons in chimneys. The best way to deal with infestations is to call professional wildlife removal services. Trained specialists eliminate the possibility of injury and disease transmission by humanely tapping the pests and sanitizing all areas affected by infestations.