"Wacky" uses for household products. Not so wacky, really, but interesting!
Prevent an ant invasion.
Draw a line of Crayola Chalk around windows and doors outside your home, and around water pipes inside your home. Ants will not cross a chalk line.Clean ring-around-the-collar.
Mark the stain heavily with white Crayola Chalk. The chalk will absorb the sebum oil that holds in the dirt.
(Thanks, Klint!)