I use Sungloss Marble Co as often as I can afford to! I'd use them more if I could. I just love them and their work. They've cleaned and polished my marble and slate for at least ten years. They are always professional. They always do a good job. They always show up on time. Sungloss Marble Co does what they say they're going to do and cleans what they say they're going to clean. I love the way they make my marble and slate look!