Kitty litter does clean foggy windows.
Fill a sock with kitty litter and tie its end. After this leave it for sometime on the dashboard of your car. And next morning you’ll not see foggy windows. Kitty litter actually absorbs moisture from the spaces including car windows. Fogging takes place as a result of difference in temperature inside and outside the car. As the inside is warmer, the interior of the windshield has more moisture than outside it.