What better way to Reduce - Reuse - Recycle. Parkminster's Reed Diffuser Refills are a great way to reduce your impact on the environment. At 200ml each they come in recyclable glass containers and contain the same natural vegetable based diffuser liquids in all Parkminster scents. We also include 14 replacement Reeds with your order so that you get the best scent throw from your diffuser. Use 7 at a time and remember to turn them once in a while.