Ontario Power Air Duct Cleaning

My house had recently been renovated when I asked these guys to come over. The vents were really dirty before they came, and very clean afterwards, so I would say that they had done a good job. That being said, we still had tradesmen in the house and it had yet to have the post construction clean up, so I can't speak to the kind of mess they could have made or not. I didn't find the guys to be rude, but there really wasn't too much need for conversation. They came, they vacuumed out the vents and they left.