Protect your colonies from Varroa destructor mites, one of the most damaging external parasites in beekeeping, with Api‑Bioxal—a trusted EPA‑approved oxalic acid treatment developed under a USDA‑supported label. This safe, effective solution helps eliminate mites before they threaten hive health. A 35g package treats 20–35 colonies, depending on whether you use the dribble method or vaporization/sublimation. Quick Facts: The only oxalic acid product approved for honey bees Safe to use even when honey supers are on Most effective on colonies with little to no brood Always wear protective gear: mask, gloves, glasses, long sleeves Do not treat multiple times per bee generation Treat all colonies at once to prevent reinfestation 5‑year shelf life Not available in California Package Coverage: 35g: 20 colonies (dribble) / 35 colonies (vaporization) 350g: 200 colonies (dribble) / 350 colonies (vaporization) Application Methods: Dribble Method: Mix 35g Api‑Bioxal into 1L of 1:1 sugar syrup Apply 5ml per occupied bee space Maximum 50ml per colony Vaporization/Sublimation Method: Seal hive cracks and entrance Follow vaporizer manufacturer instructions Use 1g per brood chamber Treat only when mite counts exceed the recommended threshold. Learn how to test for mites with Varroa monitoring. 35g: ~ 5 ¼" x 9 ¾"350g: ~ 5 ¼" x 10 ¼" x 1"
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