znjy123 It also depends on your kid's personality. For my elder son, after a serious talk and repeated reminds, he stops. For my younger son, every time he admitted it's wrong, yet he'd did it again right on the spot. After all the recommended methods on books, I finally took the strict approach and literally washed his mouth whenever he did that. Then he moved up to the 4 year class and stops all the bad words all of sudden.
A-maoNo big deal. Growth pain.孩子都经过这个年龄。记得儿子有阵子就爱说“pupu”, “尿尿”,还自以为得意呢。不用训他们。过一两年就好了。 Depends on what "dirty" words they use.Most likely they don;t speak in public after you told them it's a "bad" word. They are very smart. If it's a "FXXX" word, then you have to stop them immidiately and told them firmly it's not proper for them to speak in such a bad maner. I have not seen my son to use such a bad word. This is for kids in middle school or high school.