Foam sprayer?

[cwenbass 14]

Just did my first house today, a buddy's. Older aluminum white siding. Wanted to try bleach free so i used 1/2 powerhouse, 1/2 simple green, and 4 gallons of water. Not sure if it was the recipe or dwell time, but left it on 15 min. then washed off but it barely made a difference. Not sure if an air foamer would help because it would allow for more sitting time or it's just the conconction i brewed up. Can't imagine I would have a good cleaning when I spray the cleaner on and it comes right off though (thanks gravity).

Thanks

[Guy B 70]

Just did my first house today, a buddy's. Older aluminum white siding. Wanted to try bleach free so i used 1/2 powerhouse, 1/2 simple green, and 4 gallons of water. Not sure if it was the recipe or dwell time, but left it on 15 min. then washed off but it barely made a difference. Not sure if an air foamer would help because it would allow for more sitting time or it's just the conconction i brewed up. Can't imagine I would have a good cleaning when I spray the cleaner on and it comes right off though (thanks gravity).

Thanks

If you were down streaming your mix, you have too much water. Older alum. siding can be tricky, oxidation is usually pretty bad. Why bleach free???