VARROX-Vaporizer

Oxalic acid dihydrate is heated by the VARROX-vaporizer.

Due to the heating action the oxalic acid liquefies and vaporises. The oxalic acid vapour fills the hive and all the bees and surfaces are then covered with a thin layer of oxalic acid crystals.

These fine crystals are well tolerated by the bees, but have a deadly effect on the Varroa.

The VARROX-vaporizer is reusable for many years. Oxalic acid dihydrate is normally sold in pharmacies.

Application and Dosage

Oxalic acid is placed in the pan and the appliance then inserted through the entrance of the hive. The hive is sealed with a sponge and the VARROX-vaporizer heated for 2 ½ minutes. The vaporizer remains in the hive for another 2 minutes and afterwards cooled briefly in water. The treated hive is left shut for another 10 minutes.

Depending on the hive 1-2 g oxalic acid dihydrate are needed.

Pure oxalic acid is caustic. Wear protective mask, acid proof rubber gloves and long-sleeved clothes.

Timing

In the broodless time in November-December.

Unit

1 VARROX-vaporizer with two battery-clips on a 3 m cable.

Concept of control

A combined application of oxalic acid in the broodless time (November-December) and a late summer treatment with formic acid or THYMOVAR has proved very efficient against the Varroa.
The VARROX-vaporizer achieves his high efficacy of 96 % only in broodless colonies.

Downloads

• User instructions for VARROX-Vaporizer

Demonstration video