We called to get our Duct cleaning this November 2011, the house cleanning was done in less that 25 min,( a 2 story semi) I did not inspect the work done before they had left( since we gave them a second chance in correcting past bad experience )so I payed when I saw them going and proceeded to check the vents,. In the main floor when I removed the grill found a srew ,( signs it was not done )walking next down to the basement ,were there are two ceiling vents , both blocked with towels to direct the flow elsewere in the house, in one of them I found the towels inside , it was atached to the ceiling with a small screw to avoid from falling and hurt by accients the baby when playing,they woudnt uncrew anything they said, but they did so on the furnace. A large Air return was also left without cleanning,even so this was left open and exposed for them to facilitate it's cleanning .After few phone calls to get this corrected, they hang uo on me and would not honered their writting 100% guarantee,unless , I was told ,we paid for their fuel.