Simply add half of the bottle of GoldTone pet fountain descaler to your fountain, add water and run for 5 minutes. Empty all liquid from the bowl, then flush with fresh water 2 more times. Our descaling solution cleaner is specially formulated to remove calcium deposits and other mineral buildup from your cat fountain, ensuring optimal performance and freshness of taste. Each order of GoldTone Dog Fountain Descaler contains 2 bottles of descaling liquid, providing enough solution for 4 uses. Our Pet Fountain Descaler is proudly Made in the USA by a family-owned business. Our GoldTone Pet Fountain Descaler is compatible with All Pet Fountains including Veken, PETLIBRO and PetSafe.