What is the best thing to use to remove tree sap from a headstone?

To remove tree sap from a headstone, it's best to use a mixture of warm water and mild dish soap. Gently scrub the area with a soft cloth or sponge to avoid scratching the stone. If the sap persists, you can try applying rubbing alcohol or a solvent specifically designed for stone care, but always test it on a small, inconspicuous area first. Rinse thoroughly with water afterward to remove any residue.