For use with the UniBond Aero 360 Moisture Absorber, this UniBond Ultra-Absorbent Refill Tab has a 2-in-1 technology that is both anti-moisture and anti-odour. This innovative tab is effective in combating bad smells and the development of dust mites and mould by absorbing excess moisture from the air. The tab design is based on the physical principle: the greater the surface area between the refill tab and the air, the higher the absorption capacity of the tab. UniBond Aero 360 Tabs last for approximately 3 months in a 20 square metre room. This pack contains 1 refill tab.