On a normal sense, children need to be corrected anytime they speak bad languages or vulgar languages. Not correcting the child means total destruction of the child's life.
We as parents have a lot to play in the life of the child most especially the upbringing. The was we speak in tje house matters most in the life of the child.
Yes, it is important to educate our children in the good use of words; this will help a lot in their social, school and professional performance. Thank you for commenting.