Just as soon as you finish eating or drinking anything that can by any possibility ferment, you must brush your teeth. ... After that, you had better rinse the teeth with listerine. ... tooth with lukewarm water, a pellet of cotton soaked in oil of cloves or spirits of camphor, and a dry pellet of cotton on top of that. ... It is almost too late for my grown-up readers to do much for themselves, but they can see to it that little Harold and Dorothy do not suffer the misery that their parents have suffered.