SITUATION Have a two story home, only one fully useable arm, can't climb a ladder, dirty winows. IDEA Spray clean and rinse the five windows on the front of our house. My idea is to pre-rinse using a high pressure stream of water. Next, using a house end sprayer apply some type of heavy duty cleaner* then rinse with high pressure stream of water. Next, spray on Windex Outdoor Window Cleaner (has it's own hose end sprayer) then rinse with fine to medium spray of water. Repeat if necessary. MY QUESTION What would be the best heavy cleaner to spray on first? I've thought about using Simple Green or Dawn Dish Detergent. All suggestions and comments welcome.