10 Best Headstone Cleaner 2026 in the United States

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.

Southeast Softwash Monu-Mental Cleaner is designed for a variety of surfaces including monuments, tombstones, and sculptures. One of its key strengths is its comprehensive cleaning power, effectively removing algae, lichens, moss, fungus, and mildew. This makes it a great choice for those dealing with heavy organic staining on outdoor stone surfaces.

The product is also formulated to be safe, aiming to protect delicate materials without causing damage, which is particularly valuable for historical or sensitive structures. Additionally, its versatile application means it can be used on various surfaces, from intricate sculptures to large governmental buildings. Users can expect long-lasting results, as it not only cleans but also helps prevent the return of organic growth, keeping surfaces cleaner for longer periods.

It's trusted by professionals in restoration and maintenance, which speaks to its reliability and effectiveness. On the downside, as a liquid product available in a 128 fluid ounce unit, it might be more than what is needed for small-scale cleanings, and users must handle it properly to ensure safety. Southeast Softwash Monu-Mental Cleaner stands out as a robust solution for cleaning and preserving stone surfaces.

The Patio Black Spot Remover is designed to be a comprehensive solution for cleaning various types of stone surfaces, including headstones. One of its key strengths is its compatibility with all stone types, meaning you don't have to worry about damaging the surface while cleaning. Its effectiveness against stubborn stains like black lichen, green algae, and white fungi makes it an excellent choice for restoring the natural color of headstones, which can often become discolored over time.

The product is biodegradable and acid-free, making it safe for use around garden areas without harming plants or lawns, which is a significant advantage. Additionally, the liquid formula is easy to apply and spreads over a good coverage area of 5 square meters per liter, so a 4-liter container should last for multiple cleaning sessions.

While the product is highly effective, users may need to apply it more than once for deeply entrenched stains. Also, the product's larger dimensions might make it less convenient to store if space is limited. Despite this, the Patio Black Spot Remover is a trusted and reliable option for anyone looking to maintain the cleanliness and appearance of stone surfaces, including headstones, without causing harm to the environment or surrounding flora.