17. Use mild detergent on upholstery.
(Image Source: woolite.us)
If you don’t want to buy a special soap for your car’s interior, that’s okay! Unless you plan on doing a deep clean regularly, it can be an unnecessary expense. What you can do instead is buy a bottle of Woolite, a gentle detergent that works on the most fragile of fabrics. Dilute it with water at a ratio of at least 8:1 in a spray bottle. Users report that it works great on leather and fabric interiors alike; just be sure to rinse or wipe away after cleaning with it.