Environmentally-friendly and made in the USA, Care Free’s 4 oz. bottle of fountain-protecting enzymes works wonders on perpetually-dirty water fountains that hold 10 gallons or less of water. Care Free’s unique formula effectively prevents stains, sludge, mineral deposits and organic contaminants from building up in the basin of your fountain, and works great no matter how fast your water is set to run! Its unique formula is safe to use on all fountains made with ceramic, marble, plastic, rubber, metal, or even stone. Its non-toxic formula is also safe for wildlife and pets that may happen to take a drink. Get your fountain bacteria-free with Care Free!