child safety window grills

my checklist: 1/ always lock the windows 2/ use window stops to wedge the windows shut/stop opening far (depends on the window type) 3/ make sure there's no furniture near the window that can be used as a ladder 4/ make sure there are no light objects which can easily be stacked by your beloved to form a ladder 5/ do NOT rely on a flyscreen as it's flimsy 6/ instruct your beloved through your voice/actions: let them know what's acceptable behaviour near a window