Stanly Steamer came out to clean my ducting throughout my house, They came with a big Stanley steamer vacuum truck but never used it to suck out the dust. They only used compressed air with a thin attachment that fit through the grates on the vent slits (they don't even remove the vent covers (only removed the return vents) and a small hand held vacuum cleaner to suck up what was blown down the duct. They showed me what they were going to vacuum up but it didn't seem like very much as this was the 1st time in 20 years that the ducts were cleaned and we have always had cats and dogs in the house. I looked up the vent after they left and it looked dusty and dirty to me. After they left I removed a few of the vent covers to see how they looked and they looked as they were not touched or cleaned. Plus I spent an additional $300 on an antibacterial solution that was suppose to give my home a clean fresh smell but when the heat kicked on it didn't smell fresh or any different then it did before. I'm doubting that they even used it. WAY WAY WAY overpriced for what they did, it was a complete rip off! Would never recommend Stanly Steamer for duct cleaning.