It's the time of year when a fireplace or woodstove take on a special kind of importance. Danger lurks in the hearths and flues of all burning devices -- and special care should be taken before attempting to create too much of a glow before checking the glow maker. Yes, chimney sweeps do make house calls in the snow. Creosote is the byproduct of burning wood. This pasty black substance is not only flammable, but can be explosive, as well. Have excesses removed. A clogged chimney or flue can fill your home with carbon monoxide -- a poisonous gas that is odorless and tasteless. And don't start a fire that will burn all night long. You might have a smoke detector, but why chance testing it on an ember that didn't want to stay in the fireplace. Take an extra step for family safety. And that's the On The House tip for today.