Treating your bees with oxalic acid: the safe way

Api-bioxal is an oxalic acid-based mite knock-down treatment developed specifically for honey bees. It is officially registered by the USDA and approved by the EPA.

It can be used for dribbling (solution), sublimation or spraying (on package bees); and can be stored for up to 5 years. The Api-bioxal powder comes in three packaging sizes: 35 g, 175 g and 350 g.

Api-bioxal is distributed in the USA by Véto-pharma, through the biggest beekeeping retailers.

Treating your bees with oxalic acid: the safe way
Now authorized when honey supers are in place

Now authorized when honey supers are in place

The EPA recently established an exemption from the requirement of a tolerance for residues of oxalic acid on honey and honeycomb.

This regulation eliminates the need to establish a maximum permissible level on these commodities for residues of oxalic acid. Consequently, it is now authorized to use Api-bioxal year-round, including when honey supers are in place.1

Maximum efficacy with little to no brood

Api-bioxal can be used multiple times a year, from spring to winter, in colonies with little to no brood, even when honey supers are on.

Be aware that treating in the presence of brood does not allow to reach the full efficacy of the treatment, as the knock-down will only target the mites on adult bees.

It is possible to obtain brood-free colonies during the season naturally (at very high temperatures when the queen stops laying eggs) or artificially by removing brood combs, splitting the colonies or caging the queens.

Maximum efficacy with little to no brood
Why use a registered oxalic acid?

Why use a registered oxalic acid?

Using a registered mite treatment means that the formulation has been strictly controlled to guarantee:

  • The safety of beekeepers handling Api-bioxal,
  • Good tolerance of the treatment by the bees,
  • High standards for hive product consumer protection.

Treating against varroa is necessary to keep honey bee colonies healthy and strong. But, making sure that treatments will not harm consumers of the hive products or the environment is just as important.

Want to purchase Api-bioxal?

Check out the list of authorized distributors in your country.

Find a distributor


Brochure summarizing all they key info about Api-bioxal: difference with non-registered products, when and how to use, new regulation update.

1- According to the tolerance exemption issued by the EPA on February 23, 2021 and the label amendment accepted on April 30,2021. The user must be in possession of the supplemental label Rev. 12/17/20.

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Tammy Horn Potter