These little gems work very well! I don’t remember where my Mother had bought them, but we used them in a house where we never had any problems up until it went up for sale, at which point they did stand up to the test of a Burgler! I also had
one on my bedroom window that did not have a screen, and I was not able to force the window open when I had locked my keys inside! In my new apartment, they are auctually fairly visible if you stare into the window with the blinds open–we all know a visible deterant is an added security precautian! As a
Security Supervisor, I would also recommend window bars or even just a cut or broken off piece of wood. The screw can be tightened as tight as you can squeeze it too. Hope this review has helped you!
