These days, hand sanitizer is commonplace. It’s conveniently stationed near cart storage in grocery stores, and even available to those waiting in line at fast food restaurants. But do they really work the way they’re marketed? A recent CNN article says the FDA doesn’t think so. The regulating agency issued a warning letter to Gojo Industries, maker of Purell, asking them to stop making marketing claims that make their products seem like pharmaceutical drugs, rather than over-the-counter topical antiseptics.