DIY Glass cleaner

2 cups of water
1/4 cup of rubbing alcohol
1/2 cup of white vinegar 
1 to 2 drops of orange essential oil 
An old jar or spray bottle

This is a superior substitute for Windex because it doesn't contain the harmful chemicals the leading commercial glass cleaners have. Using this will ensure the same results as any alternatives but will leave you feeling confident about not using products that contribute to harming the environment.