All YETI Rambler products are 100% dishwasher safe. If you do choose to use a dishwasher, place the Rambler body upside down on the top or bottom rack, depending on where it fits best. Lids and bottle caps should be placed on the top rack, away from the heat, while gaskets can be placed in the silverware tray on the bottom rack. Alternatively, you can clean your drinkware with dish soap and warm water. For a more thorough cleaning, YETI suggest removing the gaskets and washing them separately before reinstalling them.