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Learners will gain the knowledge and skills to safely and effectively apply oxalic acid sublimation for varroa mite control in beekeeping.


Key Takeaways 


  1. Effective Varroa Mite Control: Discover how the innovative use of an oxalic acid sublimator wand provides a powerful method for addressing varroa mite infestations in beehives. Learn how this treatment targets these harmful parasites while safeguarding the bee colony’s well-being.

  2. Safe Application and Procedure: Explore a step-by-step guide to using the sublimator wand, emphasizing the paramount importance of safety. From proper protective gear to precise application techniques, understand how to ensure both your safety and the effectiveness of the treatment.

  3. Observation and Best Practices: Learn the significance of post-treatment observations and ventilation for successful hive management. Uncover valuable insights into assessing treatment outcomes and accessing resources from local experts and beekeeping associations for tailored advice on varroa mite control. 

Using an Oxalic Acid Sublimator Wand for Beehive Treatment

Procedure Overview:

The use of an oxalic acid sublimator wand is an effective method for treating beehives to control varroa mites. This process involves sublimating oxalic acid dihydrate crystals to create a vapor that targets the mites. Here’s a breakdown of the steps involved, along with important safety tips:


  • Hive Preparation: Close off the front entrance of the hive with foam or cloth. Place a varroa floor and seal the back of the hive to prevent vapor from escaping.
  • Protective Gear and Equipment: Wear a mask rated for organic acid vapors, goggles, and heat-resistant gloves. Measure 2.25 grams of oxalic acid dihydrate crystals into the provided ceramic bowl.
  • Power Source: Connect the sublimator wand to a suitable power source (battery with an inverter).


  • Safety First: Prioritize safety by wearing the required protective gear to prevent exposure to oxalic acid vapors.
  • Position Sublimator: Flip the sublimator wand upside down and press it onto the ceramic bowl, creating an airtight seal.
  •  Start Treatment: Switch on the sublimator and allow it to heat up to the required temperature.
  •  Insert Nozzle: Carefully insert the nozzle of the sublimator into the hive entrance (or back entrance if applicable) to release the vapor.
  •  Treatment Time: Allow the oxalic acid to sublimate according to the manufacturer’s instructions. 


  • Observation: After treatment, observe the varroa mite drop on the sticky board under the screened bottom board to assess treatment effectiveness.
  • Ventilation: Once all hives are treated, unblock upper entrances and allow hives to ventilate for 10-15 minutes before closing them up. 

Safety Tips:

  • Always read and understand the product label and material safety data sheet (MSDS) before use.

  • Wear appropriate personal protective equipment, including acid-resistant gloves, goggles or a face shield, and a properly fitted respirator.

  • Store oxalic acid away from sunlight, in a cool, dry place.

  • Avoid skin, eye, and face contact when handling oxalic acid.

  • Know the protocol for emergencies involving oxalic acid exposure and have the MSDS accessible.

  • Seek advice from local experts or beekeeping associations for region-specific guidelines.


Remember, safety is paramount when using chemicals, especially when dealing with potentially harmful substances like oxalic acid. Follow instructions closely and prioritize the well-being of both yourself and your bees.

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Guide to Organic Acids for Varroa Mite Treatment

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