I use windshield washer fluid for my windows in the house. Just use the Regular Cheap Blue Kind. I refill bottle and use a squeegy. Long Handle for i'm only 4'11 Tall. And it works and is cheaper than buying both kinds.
Plus i get a streak free shine everytime. The kids can even do it without streaks.
Don't use the Rain X that you use in the winter for your windows. Good for car because it doesn't freeze, but smears in the house.