When is the last time you checked your chimney? If it’s been a while, be sure to take a good look before lighting up your fireplace this season.

In addition to the leaves and other debris that can build up inside the chimney, animals often make themselves at home within the den-like structure.

The biggest concern, however, is the blockage and buildup of toxic gases caused by excessive creosote, a wood preservative, in the flue. Too much creosote can lead to a chimney fire.

In fact, according to the National Fire Protection Association, “The leading factor contributing to home heating fires (25%) was failure to clean, principally from solid-fueled heating equipment, primarily chimneys.”

Don’t put fireplace maintenance on the backburner! Have your chimney professionally cleaned at least once every year.

For more specific tips on cleaning and maintaining your fireplace, read our previous article, “Don’t Chill Out!”