How long does it take to begin working?Updated a month ago

The moment you drop Krazy Klean in your tank, it begins preventing stains and scale. You need to remove any pre-existing stains or scale from the bowl in order to be able to see the impact Krazy Klean is making. In the case where the toilet tank is filled with stain and scale, Krazy Klean may need to break this down before it can begin preventing stains and scale in the toilet bowl.

Krazy Klean provides 10 years of stain-free living.