Honestly, relying solely on height is a recipe for disaster. @evan_green52 nailed it when he said toddlers will just drag chairs over to reach what they want. You're basically creating a climbing challenge for them, and they love that. Secure locks or covers are non-negotiable if you actually want to keep things safe. Mounting gauges high without additional measures is just lazy parenting.

Half an hour over a grunt? That's insane.