By simply squeezing the bottle pointed directly up the flue (with an upward draft) near the top of the firebox, the powder is carried up the chimney, coating the entire surface of the flue and enabling the four components to start working.

ACS Powder modifies third-degree creosote by converting it into a more brittle state that has a different expansion/contraction rate than the flue it is attached to. During heating and cooling cycles the treated creosote loses its adhesive properties so it can be more easily removed.

The time it takes to modify third-degree creosote with ACS Powder will depend on many variables such as: type of wood, moisture content, burning habits, air flow, flue size and amount of existing buildup. In some cases reaction time is fast, within a week or two. Other more difficult buildup may require regular use and multiple cleanings during the heating season to completely modify the existing third-degree creosote.

*Note: Not recommended for use with wood stoves having catalytic combustors unless bypass switch is enabled.

All chimneys should be inspected and/or cleaned annually by a qualified chimney sweep. The Chimney Safety Institute of America (CSIA.org), National (NCSG.org), and State Chimney Sweep Guilds are good sources for finding qualified chimney sweeps.