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The labeling requirements for oxalic acid dihydrate as a pesticide for varroa mite control, as communicated by the environmental protection agency (epa) to the usda. Personal protective equipment, user safety requirements, and first aid measures, as well as application directions and storage and disposal instructions.
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Fast Track Label Acceptable v.
OFFICE OF CHEMICAL SAFETY AND POLLUTION PREVENTION
EPA Reg. No. 91266-
page 2 of 2 5HY
continued
To completely dissolve Oxalic Acid Dihydrate, use warm syrup.
Dissolve 35 g of Oxalic Acid Dihydrate in 1 liter of 1:1 sugar: water (weight:volume). Smoke bees down from the top bars.With a syringe or an applicator, trickle 5 ml of this solution directly onto the bees in each occupied bee space in each broodbox. The maximum dose is 50 ml per colony whether bees are in nucs, single, or multiple brood chambers. Under certainunfavorable conditions (e.g., weak colonies, unfavorable overwintering conditions), this application methods may causesome bee mortality or overwintering bee loss. VAPORIZER METHOD: Apply only to outdoor colonies with a restricted lower hive entrance. Seal all upper hive entrances and cracks with tapeto avoid escape of Oxalic Acid vapor. Smoke bees up from the bottom board, Place 1.0 g
Oxalic
Acid Dihydrate powder into vaporizer. Follow the vaporizer manufacturer’s directions for use. Insert the vaporizerapparatus through the bottom entrance. Apply heat until all Oxalic Acid has sublimated. SPRAYING PACKAGE BEES Ensure bees are clustered before applying oxalic acid (for example store in cool dark location 24 hours before application).Spray broodless package bees with a 1:1 sugar:water solution at least 2 hours before spraying with oxalic acid. This allowsbees to fill honey stomachs with sugar water reducing ingestion of oxalic acid.Mix a 2.8% oxalic acid solution by dissolving 35 g of Oxalic Acid Dihydrate in 1 liter of 1:1 sugar: water (weight:volume).Evenly apply 3.0 mL of 2.8% oxalic acid solution per 1,000 bees using a pump sprayer or battery powered sprayer (forexample, a typical 2 lb package contains approximately 7,000 bees which requires 21 mL of solution). Apply solution evenlyon both sides of the package.Store bees in a cool darkened room for 72 hours before hiving.
Oxalic acid’s mechanism of action is unknown at this time. Any Varroa mite
population has the potential to become resistant to acaricides. Resistance development is affected by both the frequencyof application and rate/dose of application. Continued reliance on a single class of miticide or single miticide with the samemode of action will select for resistant individuals which may dominate the mite population in subsequent generations. Inorder to prevent resistance development and to maintain the usefulness of individual insecticides it is important to adoptappropriate resistant management strategies.To delay resistance:
x^
When possible, rotate the use of miticides to reduce selection pressure as compared to repeatedly using thesame product, mode or action or chemical class. If multiple applications are required, use a different mode ofaction each time before returning to a previously-used one.
x^
Base miticide use on Integrated Pest Management (IPM). This includes proper pest identification, monitoring forlocality specific economic threshold and economic injury levels, record keeping, and utilizing all available controlpractices (cultural, biological and chemical).
x^
Maximize efficacy by following all label instructions including dosage and timing of application.
Do not contaminate water, food, or feed by storageor disposal. PESTICIDE
Store
only
in
original
container, in a dry place inaccessible to children,pets, and domestic animals. PESTICIDE DISPOSAL:
Wastes resulting from the
use of this product may be disposed of on site or atan approved waste disposal facility. CONTAINER HANDLING:
Nonrefillable container.
Do not reuse or refill this container. PLASTIC
Triple
rinse
container (or equivalent) promptly after use. Offerfor recycling, if available. Otherwise, puncture anddispose of in a sanitary landfill, or, if allowed bystate and local authorities, by burning.
If burned,
stay out of smoke.