How to Clean the Stanley Steel Thermos
- 1). Fill your sink with enough hot water to cover the thermos.
- 2). Add two cups of vinegar to the water.
- 3). Remove the lid and screw top from the thermos, and immerse these parts, as well as the thermos body, in the hot water and vinegar mixture. Let the sections of the thermos soak for about 10 minutes.
- 4). Wet a dishcloth in the water and vinegar solution, and squirt several drops of dish soap onto the cloth.
- 5). Wipe down all surfaces of the thermos with the soapy dishcloth.
- 6). Rinse the thermos and dry it before storing or using it.