What you're looking for does exist but might I suggest a simpler solution.

Just mount it up high where the kids can't reach. If you're looking for something a little nicer.

{{!gwi}}

I clicked a little too soon. The second item should have been this:

{{!gwi}}

Or another option:

Although the simple hook is the least obtrusive and only leaves two holes to be patched.

There is (or perhaps was) a device that was part of the hinge, designed as a security device to keep the door from being opened. I couldn't find one of those.

When we were kids, if my parents said not to go someplace we didn't, because we knew we'd get a whooping. I never entered my parents bedroom. It was totally off limits to us kids.

That said, there are 3 products on this amazon page. Scroll down.

Here is a link that might be useful: secure doors

you know your child best. If something up high, like any of these items, would tempt them to drag a chair over and climb high, then a safer option may be a small key or combo padlock at normal height.

Yes, most kids will respect boundries that you tell them. But if you child is not yet one of them, then by all means it is your responsibility to keep your child safe and your home worry free by doing what you need to do.

I was in an apartment, and my daughter learned how to open the latch on the main door (like the silver one with the chain). At least she couldn't get the heavy exterior lobby doors open. She had not started kindergarten yet.

I resorted to tying the chair legs to the table - she couldn't get them untied and never did find the scissors.

I would go to work in the afternoons (after Dad came home) and co-workers would ask "what did your daughter get into today?" Some kids are like that.

Cathy