OxaVar 12V Car Aromatherapy Diffuser - Portable Essential Oil Vaporizer for Home, Office & Travel Use

As far as we know, this is the fastest and best quality 12V oxalic acid vaporizer on the market! So simple to use; just hook it to a car battery, dispense the proper dosage of oxalic acid crystals in the bowl, insert into the hive entrance, and wait till the acid has fully evaporated. Treats a single brood chamber hive in 2-3 minutes.