Grease patties are made with shortening, sugar, mineral salt (sea salt is good) and wintergreen essential oil, for tracheal mite control. Information on grease patties and other interesting topics can be found at the West Virginia University Agriculture site which is; http://www.wvu.edu/~agexten/varroa.htm
President - Tom Hutt is a beekeeper as well as a builder and inventor of " think out of the box" bee equipment. His personal experiences with honey bees can incite debate as well as argument. He believes in open dialog in all topics concerning bees. With the application of science, research and experimentation all problems can be solved.