We aim with our treatment concept not only to reduce the varroa infestation but also to reduce proliferation of infectious diseases. To get ready for a productive season and to reduce the risk of colony losses it is most important to reduce the Varroa infestation already before the honey frames are mounted in spring. In productive colonies we achieve this by cutting drone brood and thus removing Varroa from the colony. Swarms, artificial swarms and nuclei will be treated with oxalic acid solution by spraying application. Only one day after the treatment honey frames can already be mounted.
Summer-treatment will only be started after the honey harvest. The first treatment will be made with formic acid if the natural mite fall is 5 and more Varroa per day. Subsequently we recommend to execute the second treatment with a different active substance, i.e. thymol in THYMOVAR®. It provides excellent protection against re-infestation due to its long-term treatment profile of three to four weeks. For the final treatment during the brood-less period in November to January we recommend to trickle OXUVAR 5.7% with sugar added. This way all the Varroa riding on the bees of the brood-less colony can be reached. The treatment with oxalic acid dihydrate can alternatively also be done by spraying a watery solution or by vaporizing oxalic acid dihydrate crystals with VARROX® vaporizer.
The winter treatment may be omitted only if the natural mite drop is less than one Varroa per day.