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| Varroa mites sucking bee blood (hemolymph) passing on viruses |
March 12, 2015
It is a great day today in the fight against Varroa mites! The EPA announced its decision to register the new active ingredient oxalic acid for use against the Varroa mites, a parasite of the honey bees.
The use of this compound is inside the beehives when the supers are not present.
The maximum application for oxalic acid in those hives is 50 ml of 2.8% oxalic acid sugar solution.
Oxalic acid is corrosive to the eyes, skin and highly irritating to the respiratory system if inhaled by applicator. Toxicity Category 1, product label "Danger"
In addition to bee suit, veil, and gloves, a respirator and goggles are required.
Application Methods:
Solution to package bees, as spray .
Solution ti beehives, sugar solution trickled between frames and other spaces.
Vapor treatment inside beehives, heated and vapor sublimates in the hive.
Both methods can be use in the early spring and late fall, when little brood is present.
Oxalic acid can provide 90-99% control of Varroa mites in honey bee colonies with either methods.
On this day: EPA concludes that oxalic acid meets the regulatory standard under the Federal Insecticide, Fungicide, and Rodenticide Act ( FIFRA).
EPA is granting the unconditional registration of oxalic under Section 3(c)(5) of FIFRA.
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| oxalic acid dribble with sugar water |
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| oxalic acid vaporized inside hive |
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