Correction

In my Queen Trapping blog, posted on 7 May 2025, I said that oxalic acid is lethal to open brood. Subscriber Chuck Landrey (facebook.com/moondancebees) has kindly pointed out that this is not normally the case.

I should have been more precise by stating that oxalic acid is harmful to open brood when trickled, sprayed¹ or fed in syrup². When applied by vaporisation (sublimation) there are no significant harmful effects³.

Many thanks, Chuck!

References

1. Majchrák et al. (2025), Veterinary Medicine (Czech) 70(7): 261–271.
2. Gregorc, Pogačnik & Bowen (2004), Apidologie 35: 453–460.
3. Tellarini Prieto et al. (2024), Frontiers in Bee Science 2: 1442030.