The Kilrock Slimline Moisture Trap absorbs moisture and humidity, protects against damp and mildew, combats musty odours and improves overall air quality. The Moisture Trap is ideal for caravans, boats, utility rooms, cellars, kitchens, wardrobes, cupboards and will work for 6-8 weeks (depending on the level of moisture) with a handy level to let you know when it's time to refill. Warning: Irritant. Keep out of reach of children. Always read instructions.