Climbing out of crib?

At what age do you think you should be concerned about your LO climbing out of their crib/pack n play?

Im just starting to think about what im going to do when that situation arises. My boys are sharing a room. My oldest is 5 and my youngest is 10 months. My oldest son has a lot of toys that wouldn't that be safe for him to play with if he got out of his bed somehow. I know he can't get out of his bed now, but im not sure when I should start to worry. My other kids were never successful in such a thing,but I hear stories.

My 17 m/o is still in his crib. He hasn't tried climbing out yet... well, not that I've seen anyway.

<blockquote><b>Quoting MunchkinWrangler:</b>" At what age do you think you should be concerned about your LO climbing out of their crib/pack n play? ... [snip!] ... bed now, but im not sure when I should start to worry. My other kids were never successful in such a thing,but I hear stories."</blockquote>


My lb is 15 mo ans has never even tried x

My DD is 15 mo old and hasn't tried. I have her bed at the middle setting though, so there is no way she could try.

My youngest son climbed out at 12 months. His brother would climb up and sit on railing by the time he was 15 months.