iRobot Roomba 630 Vacuum Cleaning Robot for Pets

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Pros: Helps keep pet hair and dust cleaned up
Cons: Noisy
We bought one of these when we had several cats wandering the house.  It's a big house with mostly tile and hardwood floors and the Roomba really helps keep the cat hair and dirt picked up.  I'm always amazed and a little shocked 
 at how much dirt and debris it picks up.  The only thing I don't like about it is the noise.  It's really loud on tile floors.  But now I just program it to run while we're gone at work so we don't have to listen to it.  

It works well and is easy to clean.  Overall, it's worth it to help keep dust, debris and fur to a minimum on the floors.