Interior Dehumidifier Is Designed To Remove Dampness & Humidity From The Air In Your Home. The Hydrophilic Crystals Help To Retain Moisture From The Air And Helps Combat Condensation, Damp Rooms, Allergens In The Air, Mould, Mildew. Easy To Use. Ideal For Rooms Including Kitchens, Bathrooms, Living Rooms, Bedrooms, Basements, Caravans, Boats, Garages. The First Drop Appears Within 1 – 3 Weeks Depending On The Humidity Level. Absorbs Up To 3 Times Its Weight In Water. Depending On The Humidity Level, The Product Will Last Between 4 – 6 Weeks.