Some thermos cups will rust during inappropriate use by the owner, but don't worry, even if they rust, the method of removing rust from the thermos cup is simple and practical.

　　 Use dilute hydrochloric acid to soak for a few minutes to remove rust, and some consumers who do not have dilute hydrochloric acid at home can also use the following methods to remove rust from the vacuum flask.

　　 Soak the cup with vinegar for a few minutes, and then gently wipe it with a clean dish cloth. After wiping, the thermos cup will return to a smooth and shiny surface. This method is practical and practical, and is suitable for every family.

　　 You can also use disinfectant to remove rust. When removing rust, pour the disinfectant into the thermos and soak for a few minutes and wipe it with a dish cloth. It can also restore the original brightness of the inner wall of the thermos.

　　 By the way, here is how to remove tea stains. When removing tea stains, you can apply toothpaste on the inner wall. After a few minutes, use a toothbrush to clean it. After washing with water, the tea stains are removed.