1. Just before lunch go for a 10 km bike ride
2. Just before dinner go for a 5 km walk (sweetened with a stop at the Dollar Store)
3. Just before bed have him clean up the family room with you.
Suddenly, he'll be so tired that he won't be able to do a thing! He'll go upstairs, brush his teeth and get into bed....and not come out even once
(Only problem is I have bike and walk with him! Oh well! It's a small price to pay!)