Acana Moisture Absorber & Freshener is specially formulated with the latest technology and ingredients. Effectively removes excess moisture & unwanted musty odours, freshening continuously with a clean & fresh "Cool Marine" fragrance. Helps protect clothes, fabric, food stores, electronics & more from moisture damage. Its 3 in 1 action: Removes musty odours Freshens the air Prevents mould & mildew Improved, new mineral beads combined with extra venting area provides faster absorbsion and better fragrance diffusion. Long-lasting too, the unit is effective for up to 12 Weeks giving controlled and continuous action. The Renew Indicator also tells you when to replace the unit.