What I really liked about the guys over at Greg's Carpet Cleaning & Upholstery is that they did a much deeper clean than any previous company that we have had clean our carpets in the past. They used a specialized treatment that digs out all of the oil stuck in your carpeting which is great. They are so very thorough and the clean that they achieve is just that much better. It does take a little longer for it to dry because of how thorough they clean the carpet, but it is so worth it because it completely removes all of the dirt and oils stuck in the carpet. I would definitely use these guys again and would recommend them to anyone and everyone.