Indoor Logs Only Without Burner

This stuff is miraculous! I recently bought a new home, and the master bedroom has its own fireplace. However, it was so blackened with soot, creosote, and other junk it was detracting from the room rather than adding. I tried a couple of cleansers, but this was by far the best. The stuff came off in a sheet, a couple of spots needed individual attention but that came off too. Tried to use it on other surfaces, no luck. It looks like it's just good for fireplaces.