I've got 2 German Shepherds with super fine white undercoats that can completely saturate the cloth interior of my wife's CX-5 in no time flat. I used to spend afternoons with a vacuum trying to get it all out.
Then I got one of these.
The job still sucks, but I use this to get the hair "unwoven" from the cloth fibers, then suck it up with the vacuum. Now only takes 1/3 of the time and is easier on the interior materials than the hard plastic vacuum attachments.
i honestly use my hand to wipe the hair into a clump then vaccum that. has worked better than any lint roller or vaccum or anything else i have tried. works better if your hands are slightly sweaty. hard to get every hair but my wolf hybrid sheds like nobodys business and that has worked for our couch and car seats.