Designed to easily remove oil, dirt and debris from your hot tub/swimming pool filter cartridges. Can prolong the life of your filter. Regular cleaning of the filter can extend it's lifepan and help to maintain the cleanliness and health of your water. Suitable for all makes and models of Hot Tubs & Pools. MAINTAIN YOUR FILTERS - Designed to easily remove oil, dirt and debris from your hot tub/swimming pool filter cartridges. PROLONG FILTER LIFESPAN - Regular cleaning of the filter can extend it's lifepan and help to maintain the cleanliness and health of your water. SUITABLE FOR - All makes and models of Hot Tubs & Pools.