Vitcas CFC Chimney and Flue Cleaner is an excellent cleaning product for eliminating creosote, soot and tar deposits from chimneys and flue linings. Can even be used on stainless steel flexible flue liners. Can also prevent chimney fires. For maximum effect, use 2-4 scoops of the cleaner twice each week. Vitcas CFC Chimney & Flue Cleaner is a top quality cleaning agent for every type of chimney and flue, including stainless steel flexible flue liners. Characteristics: non-corrosive colour: light brown apply 2-4 scoops twice per week for maximum performance Applications: removes tar, soot and creosote deposits in chimneys and in flue linings with continuous use, the creosote, tar & soot deposits will become minimised prevents chimney fires from taking place