Hello , do any of you have experience with treating varroa mite with the substance Copper Gluconat(C12H22O14Cu) M.W. 453,8 14 % Cu). Please se attached links : http://website.lineone.net/~dave.cushman/cuguse.html#top http://website.lineone.net/~dave.cushman/cugluconate.html Best regards Arnie