At 22 months DD has been put in timeout 4-5 times - usually 60-90 seconds in her crib while we're in the room or nearby. But lately I find myself wanting to "threaten" (such an awful word!) her with it more and more as she is pushing boundaries since it catches her attention. Most times I stop myself so I'm not making empty threats and so it doesn't lose its potency when we really do use it, but sometimes it's so hard!