At the front of my house there is a curved walkway made of stones that are cemented together. Each stone is a different shape and usually about 10-12 inches in diameter. the walkway is 10 years old. Some sections of the stone have turned black due to the dirt. What is the best method to clean the surface of the stones?
Answer:
I guess that would depend on what the 'dirt' is. If its just rotted plant material, your local nursery will be able too help you but if its anything else, you may have to analyze it and go from there.
