Ever reached for a Kleenex only to realize you’re looking at a generic box of tissues and thought, “Wait, WHAT?” I’m not using a Kleenex. It’s a tissue, but your brain says Kleenex.

Waterpik is so ubiquitous that the brand “is to water flossers what Kleenex is to tissues,” says Brooklyn ... from countertop models to travel-friendly options. Multiple pressure settings ...