HG Headstone Cleaner: This headstone cleaning solution is suitable for granite, marble, bluestone and other natural stone headstones Designed for easy cleaning: Easy to use spray cleaner with fast results. Ideal for tackling moss, bird mess, algae, lichen, mud, weathering, dust & mucky build ups on the stone Usage: 500ml of HG Headstone Cleaner is sufficient for approximately 3m2 How to use: Spray the dirty marks from a distance of 5cm, leave the product to absorb for 25 minutes and remove any dirt with a cloth or brush, then rinse with plenty of water Warning: DO NOT use HG Headstone Cleaner on lead and gold lettering. Rinse off from bright metals and lettering immediately. Tip - Use vaseline on the lettering to protect them whilst cleaning