How to clean windows with no extra cost?
Mix 2 tablespoons of vinegar in one liter of warm water. Clean the glasses with the obtained solution.
Dilute a little glycerin in water, add a few drops of ammonium chloride alcohol - clean the windows with this solution and they will not dust for a long time.
If you want your window panes to look unusually bright, add a little bit of shabby or washing lilac to the water.