They picked up a black area rug from my house that had some pet stains and took it with them to clean it at their site. They cleaned it, treated it, and then brought it back to my house. My problem with New York Carpet Cleaning was the smell after they cleaned the rug. It smelled like chemicals for months and my house smelled like a cleaning supply store. I was also surprised by the price, this was a 5x8 rug and it cost $250 for the cleaning.
I've never encountered anything like the chemical smell of the rug. I would think that a professional business would know how to clean a rug without it smelling terrible for months. I have a bottle of carpet cleaner that cost me $20 and it makes the rug smell better than what they used. I understand getting pet stains out is hard, but I would beware of using New York Carpet Cleaning if you're sensitive to chemicals. They were also two hours late picking up and dropping off the rug when they set a time for our appointments. I think if they're going to charge a lot of money, their service would be up to standards.