Step 1
Pour the washing soda into a clean, plastic spray bottle.
Step 2
Add 3 cups of warm water to the bottle. Screw on the lid and shake the mixture to allow the washing soda to dissolve.
Step 3
Spray the mixture on the tempered glass surface.
Step 4
Clean the tempered glass by wiping it with a soft, lint-free cloth. If you are cleaning both sides of a window, use a vertical motion on one side and horizontal strokes on the other. If any streaks remain, it is simple to figure out which side the streak is on.