Odor-Eaters Work Wear Insoles destroys odour and absorbs sweat.Odor-Eaters Work Wear insoles for work boots and shoes are specially designed to be tough and durable. Odor-Eaters Work Wear contains activated charcoal to lock in and destroy odour, Insta-Fresh® to instantly neutralise sweat acids that release odour and a powerful anti-bacterial agent to fight odour-causing bacteria, providing odour and wetness control that lasts for months.