>>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.... ---------------------- 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 -- Visit www.honeybeeworld.com/bee-l for rules, FAQ and other info ---