Beaumont Bourbon Fragrance ElixirBeaumont's Fragrance Elixir (Reed Diffusers) is the ideal way to scent a powder room, bathroom, office or laundry room. We have used actual whiskey bottles\flasks, that are 6oz. and come with 8 reeds, as well as a cap to replace the screw top lid. Once reeds are inserted, flip them the next day, then once a week after that. This will allow your diffuser oil to last for up to 6 months.