All you need to clean up after a day outside camping, fishing, or on the beach is the Sandy Feet Sprayer and a jug of clean water. It does not need to be filtered. We recommend a container like the one we sell because it will allow you to use the sprayer multiple times for small-to-medium jobs without refilling. We use one jug and clean off our small family, all our beach toys, our wagon and coolers and we only go through about 2.5 gallons.