You don't need to go to the store and buy Windex or whatever else glass cleaner there is. They still leave streaks anyway. Here is a way you can save money and actually enjoy cleaning.
Add Distilled Vinegar and water (Equal parts) in a spray bottle, and you can use this to clean mirrors or glass doors or windows. You would need to use newspapers (yes newspapers) save your paper towels they cost much more than newspapers. That's it only $3.00 max for 6 months no streaks no smells.