1. left to right
   left to right on the outside, right to left on the inside
2. the direction doesn't matter, just do one direction on the inside and one on the outside

It is best to wash your windows in one direction on the outside and another on the inside so that you can see on which side the streaks are coming from.

1. It usually works better.
   It has fewer chemicals.
2. If you run out, you can always make up some more.

Home made window cleaners usually have fewer chemicals and are more cost efficient than store bought products.

1. store bought
   home made
2. roughly equal

A Consumer Reports survey revealed that although homemade products were all rated satisfactory, people preferred to use store bought, brand name products.

1. methylated spirits
   baking soda
2. vinegar

Home made cleaning solutions are usually made from a mixture of water and either vinegar, ammonia or alcohol.

1. Dust the window before applying cleaning solution.
   Vacuum the nooks and crannies and sills first.
2. Use very hot water.

Vacuuming the nooks and crannies and sills first will get rid of a lot of dust and grime.

1. Avoid washing your windows on a sunny day.
   Avoid washing your windows on a cloudy day.
2. Avoid washing your windows on a rainy day.

Avoid washing your windows on a sunny day; the sunlight will dry them too fast, causing streaks.

1. Windows made of rippled glass.
   Windows with large panes.
2. Windows with small panes.

Squeegees work best on windows with one large glass pane; a sponge is better on small paned windows.

1. paper towels
   to use hot water
2. a dry cloth

To get a streak-free result, polish the windows after cleaning with a dry cloth or dry newspapers, to soak up any remaining moisture.

1. Using a sponge and water or a cleaning product and a cloth.
   Doing all the insides first, then the outsides.
2. Hiring a professional window cleaner.

The most common way to clean a window is using a sponge and water, or a glass cleaning product and a cloth. Professionals use squeegees and water.

1. once a week
   once a month
2. once a year

It is recommended to clean your windows, inside and outside, once or twice a year.