This question is actually for my friend. I asked her permission to post this to our forum, and she happily consented.
She has been having the hardest time getting her almost 3yo twins to stay in their beds at night and go to sleep. Most nights they keep her up until 10 or 11, and rarely take a nap during the day. She is at her wits end. Her and her husband have tried everything. They've spanked. They took the twins out of their cribs when they began climbing out, so now the girls have even more ability to get out of bed. They have taken everything out of their rooms except for the mattress on the floor w/ a blanket and pillow. They've even taken off all their clothes except the diaper because the girls play with their clothes instead of sleeping. They've also tried valerian root to help them be more sleepy, and that didn't work either.
My suggestion to her (and yes, I realize it's extreme) was to again take everything out of their room except the mattress, blanket, and pillow, and lock the girls in their room from the outside. They would be safe, nothing to hurt themselves or each other. If they're crying, every 10-15 minutes open the door, put them back in bed, assure them you're still here, and tell them to go to sleep. But at least they wouldn't be able to wander around and keep everyone awake.
I really don't know how to help her, so I was hoping ya'll could. If you have any suggestions for my friend to keep her twins in bed so they can all get some much needed sleep, please let me know and I'll pass them along!
P.S. The twins are the youngest of five children. The others are ds8, dd7, and dd5.