How to rust the insulating cup?

Some insulating cups will rust when their owners use them inappropriately, but don't worry, even if they rust, the method of removing the rust of insulating cups is simple and practical.
& nbsp; use dilute hydrochloric acid soaking for a few minutes to remove rust, and some household consumers without dilute hydrochloric acid can also use the following methods to remove rust insulation cups.
& nbsp; soak in a cup with vinegar for a few minutes, then gently wipe it with a clean dishcloth. After wiping, the cup can be restored to a smooth and shiny surface. This method is practical and practical, and suitable for every family to use.
& nbsp; also can use disinfectant for rust removal, when rust removal, the disinfectant is poured into the insulating cup, soaked for a few minutes, wiped with dishcloth, also can make the inner wall of the insulating cup return to its original brightness.
& nbsp; by the way, how to remove the tea dirt? When removing the tea dirt, you can apply toothpaste on the inner wall. After a few minutes, you can clean it with a toothbrush, and the tea dirt will be removed after washing with water.