How to perform the treatment 1) Hook up the terminals to the battery, respecting the polarity (red+, black -). After about 1 minute, you can proceed with the treatment. 2) Pour in 2.5 g. of oxalic acid with the dispenser provided for 10-frame Beehives, halving the dose for 6-frame Nucleus hives. 3) On average after 1 1/2 minutes you can switch to another Beehive; it is recommended not to turn off the device in treatment series. 4) Turn off BioletalVarroa® only at the end of the uninterrupted series of treatments to avoid overheating of the bowl and unnecessary energy consumption. 5) For practicality, less disturbance to the bees and better defense for the Beekeeper, we recommend to drill, on the back of the Beehive, a hole (45x12mm) skimming the bottom net, and perform the treatment from this , taking care to close with a cloth the entrance/exit bees from the step for about 5 minutes. This opening, after treatment, can be closed with a simple sheet of metal. 6) To perform the treatment from the entrance/exit bees from the step, it is recommended to operate with a wooden lath, or with a rag.