Oxalic Acid

[ebee]

Advice on Oxalic acid sublimation (car battery). Can it be used more than once on the same hive and if so at what interval.

[gavin]

I've no experience of sublimation (trickling is safer and works for me) but those who advocate it say that multiple applications are possible. Your main problem will be that colonies are probably increasing their brood raising now and that any oxalic treatment will soon be less effective. Do it anyway, see what the mite drop is, and if it there is a heavy fall repeat in a couple of weeks?

[ebee]

Thanks Gavin for you advice.