I bought this for my new home, but thanks to it, my child has grown into a well-behaved kid who doesn't open doors on their own, so I no longer need it. I'd like to pass it on to someone who does. I used it in my old house, and it made life so much easier during the difficult period around the age of one and a half, as it prevented my child from opening doors. It also prevented accidents, and it's easy and safe to use. It also seems to be good for preventing pets or those needing care from opening doors. I will ship it via anonymous Mercari delivery, using Takkyubin Compact!