>>Where are those of you in the US purchasing oxalic acid? ..  
Nebraska was to have a section 18 mitacide approved but it is going 
too slow for this year....

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Any hardware store should have it.  It's used as wood bleach.  It 
comes in pure anhydrate form but call the manufacturer to confirm 
they don't add anything else!  I did.  It's very inexpensive and you 
use small amounts.

I can't help re. approvals and registrations.  Oxalic acid has been 
used for a couple of decades following thorough research in countries 
that are no banana republics.

I only use oxalic acid along with screened bottoms for varroa 
control.  Unlike Checkmite or Apistan, OA leaves no unnatural levels 
in honey or wax.  Approval is taking a long time because there is no 
big business pushing for it...

Waldemar

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