White spirit (UK) or mineral spirits (US), also known as mineral turpentine, turpentine substitute, petroleum spirits, solvent naphtha (petroleum), varsol, Stoddard solvent, or, generically, "paint thinner", is a petroleum-derived clear liquid used as a common organic solvent in painting and decorating. This substance is a light grade of kerosene. It is a highly effective mite killer. It can also kill you.