 On a Vidal Sassoon hair dryer, warning, do not use while sleeping. On a dozen eggs, warning, this product may contain eggs. On a razor scooter, warning, this product moves when used. Last Christmas, warning, this Christmas lights are for inside or outside use only. And my favorite, on a washing machine, warning, do not put any person in this washer. But considering that we have a generation that eats Tide laundry pods, maybe you just can't have too many warning labels.