StoneTech RTU Revitalizer, Cleaner & Protector for Tile & Stone, 1-Gallon (3.785L), Citrus Scent Safely cleans natural stone countertops and applies a mold and mildew resistant protection Built-in sealer makes surfaces easier to clean and leaves a fresh citrus scent. Recommended surfaces include: marble, granite, limestone, travertine, slate, sandstone, flagstone, and quartzite Easy-to-use liquid is safe, water-based, antibacterial, and biodegradable Gentle, water-based formula requires no rinsing, simply spray and wipe.