Oxalic Acid Vaporization is one of the safest and natural methods for mite treatment.

With this unit you can treat about 400 colonies on 1 can of butain about $4 per can.

Oxalic Acid is readily available.

Recommended treatment cycle is 2g 2x per week for 3 weeks.

Takes about 15 Second per hive.

https://www.youtube.com/watch?v=-pY95RxvHh4

https://www.paulsbees.com/product-page/oxalic-acid-vaporizer