uncle harry's natural alkalizing miracle mouthwash | adult & kids mouthwash for bad breath | ph balanced oral care mouth wash & mouth rinse (8 fl oz) uncle harry's uncle harry`s mouthwash is made of pure, natural ingredients for fast acting freshness and oral hygiene; nothing artificial, only pure plant essences. soothes sore throat, freshens breath and enlivens teeth and gums. safe and non-toxic.