A.J.
He is old enough to "train". We didn't baby proof and taught all the kids with discipline to react to "no" and what and what not to mess with at that age by giving a brief, firm, calm, consequence for ignoring "no" and continuing to climb, etc. That way they could have run of the house because they pretty much stayed out of hazardous things. I don't know his background being a foster child, if he was severely abused or something and you don't want to discipline? I was raised the same way though (taught with discipline not to get into everything) and it let my brother and have a lot of freedom. My toddlers could go anywhere and not trash people's homes (even my most stubborn ones), and I could watch everyone here alone while my husband traveled. If you want details let me know, I have a couple of toddler training books.