Varroa Treatment: Api-Bioxal RTU

Varroa Treatment: Api-Bioxal RTU

The Varroa Treatment Series continues with another oxalic acid option: Api-Bioxal RTU, a ready-to-use liquid formulation designed for dribble application.

Dr. David Peck of Betterbee joins Jeff and Becky to explain what makes RTU different from the traditional oxalic acid and sugar-syrup dribble beekeepers may already know. Instead of weighing, measuring, and mixing oxalic acid, RTU arrives premixed and ready for application at 5 milliliters per occupied seam of bees.

David discusses why the glycerin-based formulation may remain active in the hive longer than a sugar-based dribble and how brood status affects its performance. In a broodless colony, RTU can serve as a powerful Varroa knockdown treatment. When capped brood is present, repeated applications can instead help bring mite populations down and hold them under control.

The conversation covers the label's repeat-treatment schedule, application with honey supers present, shelf life and storage, temperature considerations, safety advantages compared with oxalic acid vaporization, and an important difference from homemade dribbles: RTU does not have the same 50-milliliter-per-colony maximum.

As David emphasizes, Api-Bioxal RTU is another tool—not a universal solution—for building an effective Varroa management program.

Websites from the episode and others we recommend:

Copyright © 2026 by Growing Planet Media, LLC

______________

Betterbee is the presenting sponsor of Beekeeping Today Podcast. Betterbee's mission is to support every beekeeper with excellent customer service, continued education and quality equipment. From their colorful and informative catalog to their support of beekeeper educational activities, including this podcast series, Betterbee truly is Beekeepers Serving Beekeepers. See for yourself at www.betterbee.com

_______________

We hope you enjoy this podcast and welcome your questions and comments in the show notes of this episode or: questions@beekeepingtodaypodcast.com

Thank you for listening!

Podcast music: Be Strong by Young Presidents; Epilogue by Musicalman; Faraday by BeGun; Walking in Paris by Studio Le Bus; A Fresh New Start by Pete Morse; Wedding Day by Boomer; Christmas Avenue by Immersive Music; Red Jack Blues by Daniel Hart; Bolero de la Fontero by Rimsky Music; Perfect Sky by Graceful Movement; I'm Not Running Away This Time by Max Brodie; Original guitar background instrumental by Jeff Ott.

Beekeeping Today Podcast is an audio production of Growing Planet Media, LLC

** As an Amazon Associate, we may earn a commission from qualifying purchases

Copyright © 2026 by Growing Planet Media, LLC

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