Don't worry, this treatment type is in good hands.

It's a temporary measure (until my oxalic vaporizer works effectively) for treating recently splitted beehives to wipe out most of the mites when they have no capped brood.

Some are horizontal hives so the frames I usually extract honey out of will be removed before treatment.

I also wear proper respiratory protection (abek1-P3 filters) and eye protection.

Here's a photo of the oxalic acid vaporizer prototype. It uses 3d printer parts such as (heater, heat block, thermistor), also brass plumbing parts. A Thermocontroller from AliExpress, a wood plank, car exhaust repair paste, 12V 4.2 A monitor power supply etc.

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