It is not recommended to clean a headstone with bleach. Although bleach is a strong disinfectant, it can damage headstones, especially those made of granite, marble, or limestone. Here’s why using bleach is discouraged:

Reasons Not to Use Bleach:

1. Chemical reactions: Bleach contains harsh chemicals that can react with the minerals in the stone, leading to discoloration or permanent stains.

2. Long-term damage: Bleach can penetrate the pores of the stone and weaken its structure over time, causing cracks or flaking.

3. Residue: Bleach residue can leave white or yellowish streaks on the stone, especially if it is porous.

4. Environmental impact: If the headstone is in a cemetery surrounded by vegetation, bleach can harm plants and pollute the soil.

Safe Alternatives for Cleaning:

• Mild soap: Use a mild soap mixed with water, such as Marseille soap, for a safe cleaning solution.

• Specially formulated products: There are cleaners specifically made for headstones, which are both effective and safe.

• Soft-bristle brush and distilled water: For simple cleaning, distilled water and a soft-bristle brush are often enough to remove dirt and buildup.

Exception for Concrete:

If the headstone is made of concrete, a very diluted bleach solution can be used cautiously, but only as a last resort and after testing on a small area. However, it is always better to use gentler cleaning methods to avoid potential damage.

In summary, to preserve the headstone and avoid damage, it is best to avoid bleach and opt for milder, more suitable cleaning methods.