We recently tried that nasty nail polish on her sucking thumb.
She switched to her left thumb.
After a few days, we decided to put the nail polish on both thumbs.
She has now resorted to her baby finger.
It's hard to do this to her- it seems so harsh!
But perhaps her teeth will thank us one day ;)
Have you had success helping a child to stop sucking their thumb (or fingers)?
We were lucky with Talia- she stopped really quickly.