• Heavy Calcium Releaser may etch some surfaces. Always test in an inconspicuous area first.
• Before applying Releaser, scrub surface of calcium with scrubbing pad or scraper blade to break up first layer of scum.
• Apply product liberally to scrubbed surfaces and let sit several minutes. Product will bubble, showing it is working.
• Scrub the area again, breaking the next layer of scum. Calcium will come off in layers just as it built up.
• Apply product and repeat until area is completely clean of calcium buildup.
• Rinse thoroughly when finished.
• Let dry completely before applying LayorCare Sealers.
• Always use full strength--DO NOT DILUTE.
• Covers approximately 300 sq ft/gallon.
• Safe and Non-toxic.