Before washing, ALWAYS REMOVE the LIGHT BASE first. The Light base must only be cleaned by using a damp cloth. NEVER submerge or dish-wash the light base. Wash lid and body thoroughly before use. Wash and Rinse LID and BODY AFTER EACH USE, leaving the lid in the open position to dry. Lids and Tritan PLASTIC bodies are Top-Rack Dishwasher Safe. Stainless Steel bodies are HAND WASH ONLY. Always store bottle with the lid and light base removed to allow parts to dry completely.