Design: Absorbs condensation and prevents mould, mildew and damp. Use: Remove plastic lid and peel back foil wrapper. Do not remove or pierce the white layer then put the plastic lid back on and place it in the desired area. Longevity: Lasts 3-6 weeks, not suitable for bathrooms. Dehumidifier: Get an unscented dehumidifier 500ml tub. Maximum absorption: When maximum absorption is achieved, the crystals turn into a gel which you can discard in the sink. Unscented: This product is unscented so you won't even know it is there! Unscented Dehumidifier Tub | Living Social | Living Social