10 Best Headstone Cleaner 2026 in the United States

The Wet & Forget Outdoor Stain Remover with Xtreme Reach Hose End is designed for cleaning a variety of outdoor surfaces, making it suitable for gently removing moss, mold, mildew, and algae stains on headstones. It is bleach-free and non-acidic, which suggests it is relatively safe for many types of stone, including sensitive ones, though it’s recommended to test on a small area first. The product is biodegradable and environmentally friendly, but care should be taken to avoid spraying near water bodies.

Its hose attachment with an adjustable nozzle makes application easy and efficient, spraying up to 30 feet, which is helpful for reaching large or tall headstones without touching them directly. The product works gradually, relying on rain and wind to naturally clean stains over weeks or even months; this slower process means it is not ideal for those seeking immediate results. There is no need to rinse after application, which simplifies use and reduces the risk of leaving residues. Heavy or old stains may require repeated applications.

The unscented liquid formula minimizes strong chemical smells, enhancing user safety during application. Each 48-ounce bottle covers a large area, though porous or heavily stained stones might require more product. This cleaner is well-suited for users who prefer a gentle, hands-off approach to maintaining headstones, focusing on safety and environmental care, but it may not satisfy those looking for quick stain removal.

Wet & Forget Moss, Mold, Mildew, & Algae Stain Remover is designed as a gentle yet effective outdoor cleaner that works on various surfaces including wood, concrete, vinyl, and metal. While it’s not specifically marketed for headstones, its ability to remove moss, mold, and algae without scrubbing or rinsing makes it a convenient option for cleaning stone monuments. Because it works gradually with rain and wind, green stains often clear within a couple of weeks, but tougher black or older stains can take several months to fade, which might require some patience.

Its formula is unscented and fragrance-free, which is good for users sensitive to strong smells, and it does not require harsh chemicals or power washing, reducing the risk of damage to delicate stone. Users mix it with water and spray on a dry surface, then leave it alone, offering ease of use and low physical effort. Since it requires multiple applications over time for deep stains, it’s less suited for someone needing immediate results.

This product provides a user-friendly, low-maintenance option suitable for gently removing outdoor biological stains from a variety of surfaces, including headstones, though its slow action might be a downside for some.

The Miracle Sealants Tile & Stone Cleaner Concentrate is primarily designed for natural stone and tile surfaces, making it a versatile option for cleaning outdoor and indoor stone, including headstones. It is safe for use in food preparation areas and is non-toxic, which means it's gentle on users and the environment. The product is unscented and odor-free, which could be a plus for those sensitive to strong smells. Its liquid concentrate format requires dilution, offering flexibility in cleaning strength.

This product is effective for stains commonly found on tile and natural stone and is safe for regular cleaning without leaving residues, which is important for maintaining the look and integrity of stone surfaces. It might not specialize in heavy biological stains like moss or lichen often present on outdoor headstones.

This cleaner suits those looking for a mild, all-around stone cleaner rather than a highly targeted headstone restoration product.