Hello Tom, Why not make your own "Varroa Blaster" out of a food grade plastic juice bottle. No harmful residues. Cheap or free and easily replaceable if damaged. Some assemble required though :>). You can heat a frame nail and melt a few small holes in the lid rather than drill them. The piece of nylon stocking between the cap and the bottle will trap any sugar clumps that would plug up the holes so there is no sifting or high humidity impacts. Best Wishes Dennis Murrell