Mite killer stuffs are carefully tested in Europe during 10 years. They are oxalic acid, formic acid and thymol.
Folks are playing "legal game" in their writings. There is something smell of business in that registeration. Apistan strips were quite expencive. Now oxalic is practically free. You may handle with 10 dollars 70 hives.
All are carefully examined but outhorieties continue their registeration game.
In our country lading beekeepeers are so practical that they do not even mention the legality.
They just recommend to use best choice.
And forum members are mad with their mite talkings. There is no end to wondering that bug and debating nonsence issues. How many of you drive car like policeman says?