Dirty Talk

To anyone who hates to vacuum or hates the noise that most vacuums make, I suggest investing in the Roomba. The newer generations go over both carpeted and linoleum/hardwood floors and picks up the smallest particles, even pet hairs. It is also extremely quiet. You can barely hear it when you out of the room. You also get the added bonus of entertainment!

This isn't a tip, but I was just wondering how you get the yellow stain that some rubber-bottomed bath mats leave on linoleum floors. I've tried Vim and Bleach and scrubbing furiously, but it's stubborn and won't come out. If anyone knows how to get rid of the yellowing, please share your knowledge!