Treatments with oxalic acid dihydrate should always be carried out in a brood-free condition. Winter treatment is carried out from November to January. It is also possible to treat breeding interruption in the summer after the honey harvest. Simply pour the desired amount of oxalic acid into the jar of the Varrox Eddy and push it through the fly hole under the bee cluster. Then close the fly hole with a damp cloth or foam strip and start the device at the push of a button. The treatment time and temperature are electronically controlled by the device and stopped once the filled amount has evaporated. At the end of the treatment, with the light flashing white and blue, the frizz can be removed. Then, when the light flashes purple and blue, you can already place the next filled crucible. That alone helps to shorten the waiting time. At this stage the device can be inserted into the next prey. The cabinet can be sealed again and as soon as the lights turn green, you can start the next treatment.