Chimney Animal Removal & Damage Repair in Maryland

Animals in the chimney create three immediate problems for Maryland homeowners. First is the fire hazard: nesting material — dried grass, leaves, twigs, feathers — is extremely combustible, and even a small fire in the firebox can ignite the nest above. Second is the carbon monoxide risk: a blocked or partially blocked flue cannot vent combustion gases properly, sending CO back into the home. Third is the zoonotic disease concern: raccoon feces can carry roundworm (Baylisascaris procyonis), bird droppings can carry histoplasmosis, and bat guano can carry both. Eagle Chimney Service performs humane animal extraction, full debris removal, flue sanitization, and prevention-of-recurrence cap installation. We do not harm wildlife — animals are extracted alive and released or transferred to licensed wildlife control as appropriate.

The most common chimney animal in Maryland is the gray squirrel, particularly in the fall when juveniles are looking for winter dens. Squirrels are climbers and will often work their way down a chimney and become unable to climb back up the slick interior flue walls — once stuck, they may live in the smoke shelf area for days before the homeowner realizes what is happening. We extract squirrels using a one-way trap installed at the flue top, providing the animal a way out without allowing re-entry. Once the chimney is empty we sweep, sanitize, and install a stainless cap. Raccoons are larger and more dangerous to handle — we coordinate with licensed wildlife control for raccoon removal when needed, particularly during maternal-den season (March through August) when mother raccoons are protecting kits. Bats require specialized exclusion that is also seasonally restricted by Maryland law.

Chimney swifts are a special case and deserve a respectful explanation. These small migratory birds are federally protected under the Migratory Bird Treaty Act and intentionally cannot be removed from a chimney during nesting season (typically April through August). Chimney swifts spend the majority of their day catching insects in the air and only return to the chimney to roost and to raise young. They build small adhesive nests on the chimney walls that do not block the flue. Our service for chimney swifts is education, not removal: we explain the federal protection, document the situation, and schedule a return visit after the swifts have migrated south for the winter (typically late September) to install a cap with proper exclusion mesh. Acting against chimney swifts during nesting season carries serious federal penalties.

Damage repair after animal occupation is a frequent need. Bird and squirrel nests can completely block flues, restricting draft for years before the homeowner notices. Damper assemblies are often coated in droppings and corroded. Smoke chamber masonry can be damaged by long-term moisture from droppings. Caps that allowed entry are often damaged or missing entirely. We sweep the flue clean, sanitize affected surfaces with the appropriate disinfectant, repair the damper and smoke chamber as needed, and install a stainless cap with code-compliant spark arrestor mesh that prevents re-entry. The mesh opening size is engineered to stop wildlife while maintaining proper draft and meeting NFPA 211 spark arrestor requirements for wood-burning systems.