My youngest is a rough one and quite the Houdini. At a year he had the ability to open our safety gate that takes a 2 handed squeeze and lift to open. With that being said it is no surprise that within less than 24 hours he figured out how to open the bonus safety lock I installed on my cabinet. Lucky for me he is engrossed in opening and reclosing the safety lock that he isn't emptying the contents of my cabinet. I think for most kids the safety lock would be a enough unless you have a problem solver whiz. The corners pretty much do as they should with them being extra rounded instead of the smaller dimension corner protectors I have used in the past. I am pretty happy with this purchase.