IMPORTANT - For the treatment of the diseases of bees, we sell products that are officially authorized and over-the-counter medications. Several other products such as lactic acid, formic acid, oxalic acid, Vaseline grease, glycerine, acetic acid, citric acid, tartaric acid, sulphur, thymol, Vaseline oil, etc. are not authorized for the treatment of bees. They are over-the-counter products for several professional purposes. Therefore, the purchaser is responsible for any improper use.