The pepper situation does sound a bit harsh but it worked on my sister and I like magic; I always ignored my mom telling me not to swear when i was about 10 or 12. So i think she did do it as a last resort. After two incidences, i never swore for months after that - i was of course scared of the pepper after the first time. But as I said, i believe that she did only use it as a last resort. She is a very sensitive woman.
What course of action would you take?
I can tell you of a harsher way I heard when a child lies. But that way sounds almost like abuse.
I think you may have the wrong impression here. I mentioned locking a child up for bad behaviour, not just for timeouts or when they go to bed.
What would you do with bad behaviour or slamming doors and fighting?
How would you correct your child from being messy? I was 'born' being very neat and orderly but my sister always had a upside down room! :d My parents always asked but she never did. My dad would just say afterwards that her friends see her as how her room looks like.
Many thanks for your comments
The more, the better.