Orange is a versatile 100% D-limonene citrus solvent with  a 1000 different ways to use it. You can use it as a drain opener, odor control agent, tar remover, parts washer solvent, silk screen cleaner, electric motor and parts cleaner; just to name a few, but the possibilities are endless. Straight from the citrus orchards, Orange is environmentally safe and 100% natural and green.