Ahrens Chamber-Tech 2000
A 5 gallon pail (30 lbs.) in dry form, just add water and apply. HOW DO YOU GET IT IN THERE? From sweeps who are doing it,you take out the damper and sometimes the top one or two rows of bricks to gain access to the smoke chamber. It's work, but if it's got to be done and this is the material to it with.