Miracle Sealants Grout Cleaner & Brightener

The cleaner is intended for grout, ceramic tile, porcelain tile, slate, and other acid-resistant tile and stone. Do not use it on polished natural marble, travertine, or other acid-sensitive surfaces. Because substrates vary, test an inconspicuous area first and keep the product away from wood and stainless steel.

Its acidic formula dissolves heavy dirt and grime, soap scum, hard-water and mineral deposits, rust, efflorescence, and other accumulated grout stains. It is designed to deep clean and brighten heavily stained or discolored grout, making it a restoration cleaner rather than a general-purpose product for light daily soil.

No. Rust-Oleum specifically recommends using a non-acidic cleaner for everyday grout maintenance because repeated use of acidic cleaners can weaken some grout. Grout Cleaner & Brightener should be reserved for restoration work on heavily stained grout and used only on compatible, acid-resistant surfaces.

Apply the cleaner to the grout lines and briefly work it in with a grout brush or medium-bristle brush. Allow it to remain for three minutes, scrub to loosen the stains and buildup, and work in small sections. Do not let the cleaner dry on the surface.

After cleaning, rinse the surface thoroughly with warm water and remove all dirty wash water with an extractor, dry rag, or sponge. Finish by rinsing with a neutral-pH tile and stone cleaner, all-purpose cleaner, or degreaser to neutralize any acidic residue that remains.

One 32 oz quart cleans up to approximately 720 linear feet of grout lines. Actual coverage varies with tile and grout dimensions, density, porosity, texture, surface absorption, weather conditions, dwell time, and application method, so the published figure should be treated as a project-planning estimate.

Yes. The manufacturer approves Grout Cleaner & Brightener for interior and exterior applications in residential or commercial bathrooms, kitchens, floors, walkways, and other tiled areas. Every application must still be limited to grout, tile, or stone surfaces that can safely tolerate an industrial-strength acidic cleaner.

The product contains hydrochloric acid and can cause serious eye and skin burns. Use adequate ventilation, avoid breathing vapors or spray mist, and wear suitable gloves and eye protection. Keep the container closed between uses, dispose of unwanted material according to local laws, and consult the SDS before cleaning.