Crime Prevention: Close Your Windows
I found this photo on another social network. If you think there aren't guys that fit through your burglar proofing then think again.
Crime Prevention: Close Your Windows (Hover)
This is a good idea as that's the way I was robbed the other day. I lost my cell phone and all the cash in my wallet because of someone who entered my apartment through the window. Thereafter, I locked my sliding glass windows all the time. As a corollary however, was the stuffiness I felt in the apartment due to the lack of ventilation.
Them thief so desperate they starve themselves to remain small small so they can fit through a bird hole to thief your things.
If you can't afford modern technology then you have to go back to colonial times with ventilation blocks but then you have another problem, blood sucking mosquitoes ready to give you dengae and tall peepers looking to see what in your house.