C.T.
Hi P.,
I actually work for SC Johnson, the company who makes this product and we've had great feedback on it. One of my co-workers has a long-haired cat and she says it works great. It's selling really well in the stores and that's an indication that it works well. I just heard of some instructions online that show you how to modify the sweeper so you can reuse it after it's full of pet hair. It will prolong the life of the item vs. throwing it away after each use.
http://www.instructables.com/id/SF8JJSSFRXWGULR/
I'd encourage you to try it!