APistan strips plus a sticky board are effective control agents for the Varroa mites (follow label directions). The reserach we have done with oil patties (or extender patties) has should a continuous treatment of Crisco/sugar patties is an excellent way of reducing mite infestation levels. Paper to be published Aug. 94 in J. of Economic Ent. If you have particular questions, I would be happy to answer them DIana Sammataro