It is fun watching our son defeat the childproofing devices around our house. We have the Safety 1st Secure Grip Door Knob Covers on one of our door. I had been noticing that the door was open when I could have sworn that I had closed it.
Normally an adult will squeeze both sides of the covers and then turn the knob. A kid can't do this so I was interested how he was getting in.
I watched him do it, and it was quite interesting. He would hang on the door knob cover, when the rubber grip is on the top of the knob. Then he would rotate the cover. It is funny watching smart kids.