Removes damaging excess moisture from your home. Each pack contains 5 x 500g refill sachets for Kilrock Damp Clear moisture traps. One 500g refill is effective for up to 3 months in rooms up to 20sqm. The damp clear moisture trap needs refilling when all the crystals are gone and the base is filled with liquid. Carefully separate the base containing the liquid and pour it away in a sink or WC. Lift off the filling lid, cut the corner off the sachet. Pour contents into the blue cage. Replace filling lid. The trap is now ready to use again. High absorbency crystals. Long lasting up to 12 weeks. Suitable for all rooms, cupboards, caravans, boats, garages.