"Pure mineral spirits carries the active ingredients and provides cleaning action. It quickly evaporates, and Sentry's proprietary ingredients bond to the surface. The bonding ensures long-lasting effectiveness, and reliable dirt free performance." - Sentry site
I never see it for sale, but I've heard that it works. I'm not real fond of using mineral spirits indoors, especially if I'm using enough to wipe down a few guns.
mineral spirits => "Toxicology -Eye, skin and respiratory irritant. Harmful if swallowed, causing vomiting, diarrhorea, drowsiness, and, in severe cases, pulmonary oedema. Harmful by inhalation. In high concentration may act as a narcotic. Degreaser. Harmful if splashed in the eyes. Typical OES 575 mg/m3 (8h TWA)" - some site I googled up