We are a chimney cleaning service in the Seattle area. The National Fire Protection Agency says nearly half of all home-heating house fires are caused by dirty chimneys, and a majority of them happen during the winter months. An annual chimney inspection looks for buildup and blockages, followed by sweeping to remove problems inhibiting performance.
Creosote is typically very difficult to remove, and will not simply come loose with standard chimney sweeping brushes. Because creosote is acidic, it can corrode metal, including the metal liner of your chimney or metal components like the damper.
When the flue is heated by the fire, a magnesium catalyst changes the makeup of the creosote so it will no longer stick to the flue and can be easily removed. The product also works to eliminate creosote related odors.
A build up of the bi-products can be dangerous. Can cause fire and other health issues. It is always a good idea to keep tree branches trimmed back and make sure animals are not nesting anywhere inside or near the chimney.