CSL Creosote Sweeping Log - Chimney Cleaning Reduce Removes Treats Dangerous Creosote Treats Fireplaces Woodstoves. A simple, effective, and nontoxic solution for cleaning your chimney, while enjoying your fireplace. Creosote Sweeping Log (CSL) burns like a standard fireplace log, while simultaneously helping reduce dangerous creosote buildup. Great for fireplaces and woodstoves! Tested by Omni Laboratories. UL Approved. - Brown
- Helps maintain your chimney while you enjoy your fireplace
- Reduces the weight, thickness and flammability of creosote
- For woodstoves and fireplace inserts
- Use every 60 fires!
- Burns up to two hours.