
They are amazing. We use them to stop our little ones opening doors from the inside and they do a great job. Cheap and very effective. Sometimes they can be a bit tricky to open, but once you get the hang of it you won't have any problems. The only thing that worries me is random locks - I think it's unlikely, but actually anything is possible. On the other hand, with a lot of force, you'll probably be able to break through one of these, but depending on your door, you'll probably end up with frame/door damage.

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