Preparation of Oxalic Acid – For Varroa Treatment

This treatment and the below mixture is 90+ effective at removing varroa mites from your honey bee colonies. However this should be applied during a period where there is no capped/sealed brood within the colony. This generally happens two times a year: During the process of requeening or swarming and secondly in the winter, typically December-January.

Mix:

• Disolve 1kg sugar in 1 litre of water. (This produces 1.67ltr of 1:1 syrup).
• mix in 75grm of Oxalic Acid Dihydrate powder. This gives a 3.2% Oxalic Acid (weight/volume) solution

Application:

• 5ml of this mixture is trickled between the frame tops  that contain a seem of bees sitting between them.

This mixture should keep for a good 4-6 months in a cool and dark place. Once it starts becoming cloudy it should be disposed of and a fresh batch mixed up.

Health & Safety Caution:

It is recommended to always use the correct safety clothing and safety glasses are the most important.

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