Got lint on your felt fedora? You need a hat brush.
I hung one of my SF Hat company fedoras in my mudroom for a few years. Recently I decided I wanted to wear it, but it was pretty dusty. A sticky lint roller would have killed the hat, what I needed was a hat brush!
Made of horsehair this brush is what you need to remove lint, loose dirt and other stuff from a nice hat.
A Hat Brush via Amazon