Before I was born, I felt that every time I washed the bottle, I had to wash it carefully and disinfect it. So you won't get sick. Before I was born, a sister came to my house to be a guest and shared her parenting experience with me, saying that it was enough to scald the bottle with boiling water after brushing it. Washing too carefully will make the baby very sensitive. If he is a little unclean in the future, his stomach will be bad. It's right to think about it. It's over after brushing and ironing. However, a few days before ironing, it will be thoroughly cleaned with bottled lotion. So far, nothing has happened.