ACS has been the industry standard for modifying glazed creosote since it was first introduced in 1982. It’s an easy-to-use liquid manganese catalyst. ACS improves safety and efficiency in wood or coal burning stoves, furnaces, boilers, fireplaces, and pellet stoves. Daily use during the heating season will improve heat transfer through the appliance because 1/32” of carbon insulates the same as 2” of asbestos. ACS attacks dangerous creosote and soot, helps prevent chimney fires, and makes the chimney easier to clean. It’s safe for use with catalytic combustors. Sold in quart (32 oz.) spray bottles.