What a scam! Somebody had to fall for it; you're welcome. They dont as much as clean the ducts and they move the dust around. Some of it will fall out of the vents, and they dont bother protecting anything that's within a 5-ft range. My guy actually moved something closer for some reason. So yeah, most of the dust stays in the ducts, it just falls on the bottom part, that's all. The mold test was really just the guy taking a look at it and deciding that it was mold. He offered me a decent price for both sanitation and mold treatment, but seeing how badly they cleaned the ducts, i can only imagine how badly they'd do that job too. Maybe the first inches of the vents and that's it. And guess what, there is absolutely no mold in my vents; they are very dirty, however. The dirtiest one is the one in the bedroom, and he didn't even clean it. He went through the back through another vent, but the opening of that vent was as dirty after as it was before. And forget about them cleaning up behind them. The guy vacuumed one tile and moved on; i took the vacuum cleaner from him and did the cleaning myself. He was clearly trying to get out of there in record time to get to his next client. Well, that's how you learn! read more