• Not a lot of products have to do that. The one people bandy about is McDonalds adding “Caution: Coffee Is Hot” to their stuff, but the actual coffee spill lawsuit was over coffee hot enough to cause 3rd degree burns. Few things need cautions against their intended use.

    Q-Tips / cotton swabs are an almost uniquely bad tool. It’s incredibly easy to rupture your ear drums. There’s no actual health benefit to swabbing your ears – it just feels good your ears get itchy. A safer tool could be made, but it’d be more expensive, more involved to use, and there’s probably several but I can’t be bothered to find out, and neither can you. They make a product that they know is inherently dangerous to use and has no specific benefit. So it has a warning against doing it. Same as cigarette packs have a warning that they cause cancer, even though everyone buying them knows that and smokes them anyway.