Q-tips are one of the most perplexing things for sale in America. Plenty of consumer products are widely used in ways other than their core function — books for leveling tables, newspapers for keeping fires aflame, seltzer for removing stains, coffee tables for resting legs — but these cotton swabs are distinct. Q-tips are one of the only, if not the only, major consumer products whose main purpose is precisely the one the manufacturer explicitly warns against. ... The little padded sticks have long been marketed as household staples, pitched for various kinds of beauty upkeep, arts and crafts, home-cleaning, and baby care. And, for years, they have carried an explicit caution — every box of Q-tips comes with this caveat: "Do not insert inside the ear canal." But everyone — especially those who look into people's ears for a living — know that many, if not most, flat out ignore the warning.