>> >>A much more effective manner is to place crisco/sugar patties in the hive >>year round. But don't add any Terramycin. Something about the vegetable oil >>discourages the tracheal mite from taking up house. Mix one 3-lb can of vegetable shortening with one 5-lb bag granulated sugar. NOTE: Be sure to use only 100% pure vegetable shortening. And use granulated sugar, not powdered (confectioners) sugar.