This product kills 99.9% of the bacteria that cause denture odor. It reduces plaque buildup and removes food particles that can cause gum irritation and dissolves stains in hard-to-reach places. It keeps dentures fresh and clean for a brighter, more confident smile. Works on dentures, partials & retainers Recommended for use on full or partial dentures and removable orthodontic appliances Can be used in any denture bath Dentures may be soaked safely in Efferdent overnight Drop one tablet into enough very warm water (not hot) to cover denture or appliance Place denture into effervescing solution, which will change from blue to clear After 15 minutes, remove and rinse denture thoroughly. Denture is clean and odor free For best results, brush dentures using the Efferdent solution and then rinse dentures again.