How Dirty is your Yeti?
For general cleaning we recommend using soap and warm water to clean the inside of the cooler. Be sure to get in the corners, near the drain plug and the seals at the top of the cooler.
For a more thorough cleansing and problems with strong odors, use a solution of warm water and bleach (6:1 ratio) with a sponge or mildly abrasive rag. Odors can easily get trapped in hard to reach areas such as around the gasket and drain plug, so be sure to thoroughly scrub those areas.
Extremely Dirty or Smelly like your great aunt Suzanne
For tough stains and very foul odors we would recommend cleaning your YETI with a high pressure soap spray found at a local do-it yourself car wash.
More of a visual person?