All my window grilles are secured at all times till now and my children are 12 and 25 years...primarily because I do not allow my helper to hang clothes outside the kitchen...only along my corridor

As early as i can. I always tell my kids to not step on the ladder or look out the window

I educate my child but at the same time, I need to secure my apartment

As soon as they are aware of height; we live in a concrete jungle.

Even when he couldn’t understand what I was saying

As early as I can as it is really really required

Of course as early as possible isn’t it???!!!!

As early as i can. But i lock the window

Best to teach them when they are young

Once they start to understand things