Spot Not: The Ultimate Powerhouse! Say goodbye to stains, rust, soap scum, bird deposits, hard water spots, and much more with FalconPro Water Spot Remover Pro. From reviving kitchen sinks & metal fences to removing stubborn water spots on cars, FalconPro Spot Not does it all! This thick acid-based formulation is designed to quickly and easily remove hard water deposits from glass and painted surfaces. Do not use on aluminum. FalconPro Spot Not is the secret weapon you’ve been waiting for! Prepare to be amazed by spotless surfaces!