.My son has b bad habit of biting nails he doesn’t eat but cut nails through mouth and spit them. I have tried to tell him to not to but doesn’t . What should i do

A. Femite lotion you can apply as of now this is going to be good as it is so bad in taste that eventually your child is going to give up on this second biting the nails can be a generic habit that the child has and also it is a sign of low confidence