I wear black/navy/brown slacks to work. They are a poly/rayon/spandex mix from Dillard's Investments label. Here's what I do:

Take off inside-out after wearing.
Wash in cold water using vinegar in place of softener.
Dry on extra low.
Hang by waistband still inside-out.
Turn right side out just before putting on.

I own a white cat, so put my slacks on just before leaving in the morning. I use a sticky roller when necessary. My work environment is pretty clean, although I do sometimes go to people's homes where there are pets. Then the sticky roller comes to the rescue. If I've not changed out of my work clothes right when I get home, sometimes I'll run the lint roller over my pants before taking them off.

Susan