I should have been more specific as to which Simple Green I used. It was
the House & Siding product, in a 128-oz size which I transferred to the
smaller spray bottle I used to spray the gutters.
In checking HD and Lowes, they do not sell this product. They do sell
Simple Green All-Purpose Cleaner. I bought the 32-oz size in a spray
bottle. It definitely is not as good as the House & Siding product. It
does the job, but you have to use more product, wait a little longer
before running a brush over it, and after hosing off the first
application, apply it a second time.
On my step ladder's platform, I place a bucket half filled with water
and place the brush in it after brushing each section of gutter.
From their website,
http://www.simplegreen.com/shopping_where_to_buy.php?product_id=19
it's a little tough to find the H&S product if you don't live near a
Sherwin William paint store. Here in NJ, there are plenty of them.
Even if you wear eyeglasses, don't rely on them for protection from the
spray. Use also dedicated safety glasses.