Filter cleaner - This universal cleaner is compatible with common garden hoses in the USA and most standard pool and hot tub filters. It makes pool maintenance simpler and faster. Cartridge cleaner - Provides gentle and effective cleaning that extends filter life without damaging the cartridge, helping water stay clear as it passes through the cartridge basin. Cleaning tool - Quickly removes debris, leaves, and oil from the filter cartridge of a pool or hot tub, offering a hassle-free way to keep water clean. Pool filter - This filter-friendly cleaner is suitable for all types of pools and hot tubs and helps keep the cartridge in top condition to maintain a crystal clear swimming environment. Use scenarios - Regular home pool or hot tub maintenance: use with a garden hose to clean the cartridge routine and maintain clear, healthy water. - After heavy use or debris accumulation: remove leaves and oil from the cartridge to restore proper flow and water clarity. - Seasonal or pre-season preparation: ensure filters are clean and in good condition before peak use to support optimal filtration.