I suggest that you go to a pharmacy and buy elemental sulphur - just sulphur with no additives. Elemental sulphur is used, among other things, to treat fruit before drying. Sulphur you find at a garden store may have additives (anti-caking, etc.) which may leave residues which affect future use of comb or honey. >What I did was add a few tablespoons of sulfur to the coals in my smoker and >then shake it up. >Smoke from this was blown into the hive rather densely and then the openings >were taped shut. ... >Sulfur is available at garden supplies as a fungicide. --