Positive reinforcement works better than a belt.
An aside. My brother-in-law had a bloodhound that they insisted be put into the basement whenever they went out. This was always a wrestling match, with hubby or wifey practically falling down the stairs trying to get him in the basement. Yelling! Screaming! Swatting! OMFG!
One day I'd had enough. I got a Milk Bone, took six steps down, offered it up, and down he came. They rewarded him in the future and never had another problem. In fact? He couldn't WAIT to get down those stairs.
Works with kids, too.