Putting window locks or barriers in windows which are accessible to young children is absolutely essential in all modern homes.  There are a number of simple tips to lessen the possibility of young children falling out of windows, such as removing all climbable furniture from beneath windows.  However, most families will want to open windows during warm weather.  The use of window locks or barriers allow windows to be opened to a set amount, which is enough for ventiation but not wide enough for the body of a young child to squeeze through.  Safetots recommend the use of window locks or barriers on all windows, particularly windows which have a frame at less than 80cm in height, even on the ground floor.