Other sellers are a lot higher priced Tesco are charging £20.00 ( http://www.tesco.com/direct/unibond-aero-360-moisture-absorber/630-1327.prd
Combat condensation, damp rooms, allergens in the air, mold and mildew with the UniBond Humidity Absorber. This humidity device has 2-in-1 technology that not only absorbs humidity but also neutralises odours. The device also has anti-spill technology to avoid any leaks and comes complete with one power tab.
Suitable for all rooms up to 20 metres squared. Reduction of humidity from the air has been shown to help asthma and allergy sufferers.