Keeping the Castle.com offers this tip:

“At first, I wasn’t too sure about admitting to a dirty bathroom in public. However, in the interest of helping other homemakers in battling stubborn spots of dirt, here goes:

For a while now, I’ve seen a dingy looking area in our vinyl bathroom floor. It’s hardly noticeable except when I remove the bathroom rug for washing. And there, in all its un-glory, was brown beside the almost pristine floor that was protected by the rug. I figured the light brown stain was made by years of hair-spray use in front of the mirror. Particles of hair spray would settle on that area and attract dirt. No amount of sweeping or regular mopping would remove it.

Finally, I stumbled on a solution.”

Read on…