Cleaning out the House Vents?

We had a thread discussing this a couple years ago. Here’s some information from that thread that might be relevant:

Jeff, am I remembering right that you live in SE Michigan? If so, you may want to try a company called Cemcare. It’s the company I worked for when I did duct cleaning, and I have great respect for their integrity and commitment to quality. Of course, that was 8 years ago, so things could have changed, but I’d be surprised. I used them frequently after I left their employ, and they always stood by their work.