Marcio did a great job cleaning all our vents to include our furnace and dryer. He covered the carpeting with tarps and he wore shoe booties to protect our carpet. I was impressed with his thoroughness and his attention to detail. He even cleaned the vent registers. He showed us before and after pictures and the results were impressive. I wasn't sure what to expect when I had this done but my expectations were surpassed and I will use this service again. Thank you.