Completed duct cleaning turned service call for customer. Arrived to Job site And introduced myself to customer. Customer just bought home and the property has an upstairs and downstairs. Downstairs has seven floor vents in upstairs has seven ceiling vents. Making Total of 14. Customer has never had a duct cleaning done before, so I explained to them how the process works and what to expect and them about the benefits of cleaning. I let them know that I was going to perform a throat inspection before coming to any conclusions, I started upstairs and inspected the ceiling vents and realized that the ceiling vents were made out of metal duct, which was good to go. I then went downstairs and looked at the floor vents and noticed they were also metal duct, but the metal joints were heavily rusted, and was potentially at the risk of bleeding fillsand from foundation of home if I was to clean floor vents. I let customer know what I had found, and explain them their options in regards to t