Citrus contains d-limonene, a natural solvent that cuts through grease and dirt, and smells great!
To make an All-purpose citrus spray cleaner:
Place citrus peels in a glass jar.
Pour white vinegar over peels and let mixture sit for 2 weeks.
Remove and discard peels.
Dilute the vinegar with water, so it is 1 part water to 2 parts vinegar.
Pour into a spray bottle and use to clean ceramic, stone, porcelain, marble, granite, and laminate surfaces.
The cleaner could discolor wood, so be sure to test first in an inconspicuous spot.