10 Best Headstone Cleaner 2025 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 Therapy Granite Cleaner Kit is designed primarily for natural stone surfaces like granite, marble, quartz, and slate, making it a suitable option for cleaning headstones made from similar materials. Its plant-based, neutral pH formula ensures it is gentle and safe for both users and stone, reducing the risk of damage during regular cleaning.

The kit includes a microfiber cloth that helps achieve a streak-free, glossy finish, enhancing the stone's appearance without leaving residue. It effectively removes grease, oil, and grime, which supports daily maintenance of headstones exposed to outdoor elements. The product is tailored toward indoor stone surfaces like countertops but can also support gentle, everyday upkeep of headstones made from common stones like granite or marble.

This cleaner offers ease of use and a polished look, though it may not fully replace specialized outdoor or heavy-duty stone cleaners for tougher stains such as moss or lichen on headstones.