In this episode of our BTP Shorts series on varroa treatments, Jeff and Becky welcome back Dr. David Peck of Betterbee to explore VarroxSan—an extended-release oxalic acid strip used to manage varroa mites. David explains how this USDA-registered product works, its origins in South American formulations like Aluen CAP, and why its slow-release delivery makes it a valuable tool for maintaining mite levels throughout the brood cycle.

Oxalic acid, a naturally occurring organic acid, is effective against varroa and safe for bees when used correctly. David walks through how the fiberboard strips are dosed, placed in the hive, and gradually deliver oxalic acid over a 42–56 day period. While the exact mechanism of mite mortality remains somewhat mysterious, VarroxSan's ability to hold down mite levels—especially during nectar flows—makes it a helpful part of an integrated mite management plan.

The team also discusses pros and cons: the product's compatibility with honey supers (with proper spacing), the need for good hive records to time strip removal, and the importance of following label instructions. They caution that VarroxSan may not be ideal as a first-response treatment for colonies already overwhelmed with mites, but it excels at keeping mite populations from rebounding.

If you're considering an organic acid treatment that doesn't interrupt honey production, this episode is a must-listen.

Links & Resources:

• Honey Bee Health Coalition: https://honeybeehealthcoalition.org/resources/varroa-management/
• Betterbee Pest Management Resource Page: https://www.betterbee.com/instructions-and-resources/pest-management.asp

Brought to you by Betterbee – your partners in better beekeeping.

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