D/2 Biological Solution – Mold, Mildew, Algae & Lichen Stain Remover for Stone, Masonry, Concrete, Wood & More

D/2 Biological Solution – Headstone, Natural Stone & Masonry Stain Cleaner

Restore the appearance of stone, masonry, and architectural surfaces with D/2 Biological Solution. This ready-to-use cleaner removes staining caused by mold, mildew, algae, lichens, and air pollutants. It is suitable for a wide range of materials, including marble, granite, limestone, travertine, concrete, brick, stucco, and wood.

D/2 offers two convenient cleaning methods. For faster results, allow 10–15 minutes of contact time before gently scrubbing and rinsing. For outdoor projects where gradual cleaning is preferred, apply to a dry surface and let the weather help remove staining over time. The biodegradable formula requires no mixing or dilution.

Key Features

• Removes biological staining: Cleans discoloration caused by mold, mildew, algae, and lichens, along with air pollutant staining.

• Suitable for natural stone: Use on marble, granite, limestone, brownstone, travertine, and other compatible architectural materials.

• Ready to use: Apply full strength directly from the container.

• Two cleaning options: Choose a scrub-and-rinse method or an outdoor no-scrub, no-rinse application.

• Biodegradable formula: Made without bleach or acids.

• Versatile applications: Suitable for headstones, monuments, sculptures, building exteriors, and other compatible surfaces.

Popular Uses

• Headstones and monuments: Remove biological staining from marble, granite, and other compatible stone memorials.

• Stone and masonry exteriors: Refresh stained brickwork, limestone, brownstone, concrete, and stucco.

• Sculptures and architectural details: Clean staining from compatible decorative stone and terra cotta.

• Outdoor surfaces: Treat compatible wood, vinyl and aluminum siding, and canvas affected by biological staining.

Product Specifications

Coverage varies with surface characteristics and the amount of staining.

Application Instructions

Scrub-and-rinse method

1. Test on a small, inconspicuous area before treating the entire surface.

2. Apply undiluted D/2 with a brush, roller, or suitable sprayer.

3. Allow 10–15 minutes of contact time, adding more product as needed to keep the surface wet.

4. Gently scrub with a soft nylon or natural-bristle brush. Do not use a metal brush.

5. Lightly mist with water and continue scrubbing.

6. Rinse thoroughly with clean, potable water.

Outdoor no-scrub, no-rinse method

1. Apply D/2 to a dry surface using a brush or pump sprayer. Do not pre-wet.

2. Allow the surface to dry without scrubbing or rinsing.

3. Let weathering gradually clean the surface. Results typically develop within one week to one month.

4. Repeat application if heavy biological deposits remain.

Handling and Storage

Wear protective gloves, clothing, and safety goggles. Avoid eye and skin contact and ingestion. Keep out of reach of children. Store tightly closed in a cool, dry, well-ventilated location away from direct sunlight and incompatible materials. If nearby plants receive excessive product exposure, rinse the plants and water the surrounding soil. Follow the product label and SDS.