ITEM NAME:22" 12V 150W Bee Evaporator Oxalic Acid Vaporiser Tool Set Beekeeping Equipment img *{margin:0;padding:0;.Add the correct quantity of oxalic acid to the cup of the vaporiser. Connect up to a 12V car battery and slip the cup of vaporiser into the centre of the hive through the entrance. Seal the entrance back up.Leave until all the oxalic acid has vaporised (a few minutes) and remove.Leave sealed up for a few more minutes and then remove the foam bung from the entrance.
