You know those black heel marks on the tile or linoleum? Or those stickers that won't come off with soap and water? Just spray a little WD-40 or some other kind of oil on them and they will wipe right off.
For easy scuff mark removal use baking soda. I sprinkle baking soda on the black scuff mark and rub it in and it instantly comes off. I also use it on my marble vanity in the bathroom. Baking soda works wonders on scuff marks or for build up of dirt in corners.