"The VARROX-vaporizer heats and vaporizes Oxalic acid dihydrate. The oxalic acid vapour fills the hive and all the bees and surfaces are then covered with a thin layer of oxalic acid crystals. These fine crystals are well tolerated by the bees, but have a deadly effect on the Varroa. The VARROX-vaporizer is reusable for many years. Oxalic acid dihydrate is available labeled for this use. 1 VARROX-vaporizer with two battery-clips on a 3 m cable. Wear protective mask, acid proof rubber gloves and long-sleeved clothes."