As many of you already know, saving citrus peels in a jar and using them to make a citrus cleaner is the easiest and cheapest DIY around. Citrus fruits contain d-limonene in the peel, a natural solvent that chemically reacts with oil to break it down. That’s why it’s so great to use in kitchen cleaners. It’s so easy to make, eco-friendly, and economical We just need to make an infusion of citrus peels to get the oil.