Pine Mountain Creosote Buster Fire Log 1.5 hr 1 pk 3.5 lb, Pack of 6Prevent dangerous chimney fires with the Pine Mountain Creosote Buster firelog the most trusted and effective chimney cleaning firelog for fireplaces and wood stoves. Fireplace safety the Creosote Buster fire log contains a specially formulated powder that converts to a super penetrating gas to attack & breaks down creosote compounds & helps prevent chimney fires Easy fireplace maintenance simply add a Creosote Buster fire log to an existing fire once