Mistake No. 2: Washing Windows on a Sunny Day
A gorgeous spring morning may seem like the perfect time to wash your windows. But doing the job when it's sunny out is a bad idea, since the windows will dry too quickly and probably streak. An overcast day is better, says Cindy LeBow, founder of Great Green
, an environmentally friendly cleaning service in New York City. LeBow makes a solution from 2 ounces of vinegar, 20 ounces of water and a few drops of dishwashing soap. Using a microfiber cloth (instead of a sponge) will ensure that you don't use too much cleaning solution—it should coat the windows but not splash down them. Donna Smallin, author of The One-Minute Cleaner
, says a squeegee will make the job a lot easier too (run it over the windows after you wash with a cloth).