Keeps your fridge fresh, dry & odour free How does it work? The Eco Basics Fridge Deodoriser starts work when you place it in your refrigerator to absorb airborne moisture, odour and bacteria. It takes 1 week for the full effects of the bamboo charcoal to clean and purify the air in your fridge. The bamboo charcoal is made from MOSO bamboo and can be recharged every month by placing it in direct sunlight. After one year simply empties the bamboo charcoal into the garden as a fertiliser.Where to place? The Eco Basics Fridge Deodoriser can be placed anywhere in your fridge or freezer. How many to use per fridge? 1 Fridge Deodoriser per 300L Fridge Capacity. How to reuse? 1. Once a month, remove the bamboo charcoal bag.2. Place the bamboo charcoal bag into direct sunlight for 1 hr.3. The UV rays from the sun will recharge the bamboo charcoal for another month's worth of use.4. Insert the bamboo charcoal bag back into the lemon case and place it back in the fridge. How to dispose of it? 1. After one year, remove the bamboo charcoal bag.2. Cut open the bamboo charcoal bag and sprinkle contents into the garden to act as a natural fertiliser.3. Dispose of the bag in the general waste bin.