Oxalic Acid Dihydrate
The efficacy of oxalic acid against varroa mites has been known for many years. It is a useful tool for beekeepers who want to reduce the varroa mite population without using higher risk chemicals. Since the product is readily available and no manufacturer was willing to register the product as a pesticide for the treatment of varroa mites on honey bees, the CHC agreed to register the chemical. Many beekeepers (and two supply companies) donated funds to assist with the preparation of the required documentation. The preparation work was completed in 2004 and CHC submitted an application to the Pest Management Regulatory Agency in January 2005. Ministerial approval for use was granted in October 2005. However the board of directors felt it was important for international trade that the product should be fully registered. The documentation was resubmitted to PMRA in October 2008. As of November 4, 2010 oxalic acid is now officially registered for use as a pesticide.
The PMRA states that:
" An evaluation of available scientifc information found that under the approved conditions of use the product has value and does not present an unacceptable risk to human health or the environment."
Directions for the use of Oxalic Acid Dihydrate
Click here for the English label for use
Click here for rhe French label for use
Technical Grade Active Ingredient English label
Technical Grade Active Ingredient French label