Ok so I've had the house baby proofed for awhile but didn't think much about my oven. I rarely use it and would never let my child near it while it was on. Anyways he hasn't shown any interest in opening it but since he's getting older, smarter, and curious I wanted to get one just in case.... that way it deters him anyways. Do you have one on your oven? What brand worked best for you?