You will not believe how well this powerful formula works on tile, chrome, vinyl, and other pool surfaces. Clings to vertical surfaces, and quickly and easily removes oily grime and scale. Just wipe on dirty surface, wait a few minutes and remove with a mild abrasive mitt or brush. Now you can enjoy a beautiful pool without all the scrubbing and work. Also works great for cleaning other pool-related items. Will not affect chemical balance. Safe to swim after use.