Ultimate Cal Block This new Technology gives you a safe, non-toxic, multi-surface protectant that is specially formulated to reduce and block calcium and hard water build-up as well as efflorescence. Ultimate Cal Block will safely protect surfaces such as glass, shower doors, ceramic tile, sinks and faucets, around pool tiles and grout, natural stone such as slate, cemet and block walls
Keep your surfaces looking like new!

Easy Spray-On Formula that is Non-Toxic
Use Indoors and Outdoors