Hi moms, this might sound simple, but every mother who has a naughty kid must be facing the same problem. Last day, my son showcased his talent of painting on the window glass. Oops! He did it with crayons and I’m fed up scrubbing with sponge and detergent which is in bad shape now. Later, while I was searching online for any DIY methods to clean this, I saw a blog [ http://canglow.ca/how-to-get-crayon-wax-off-windows/ ]. It says using WD-40 or any other water displacing spray can help get the window cleaned easily. It was a new idea for me and it worked. Hope this will help you too. Save your time, hard scrubbing your windows.