Rust spots that appear after house wash in the soffit

[mike movila 78]

I have washed house for some time without having difficulty getting great results. Once in a while I run into a house that I wash and everything appears ok after wash however when I conduct a final inspection I see these rings around the soffit that look like rust stains. It is very frustrating dealing with this problem. I tried different approaches using wand at different angles keeping distance using less pressure to aliviate the problem. Has any one else encountered this problem and do you guys combat this thank you

[gman201 20]

Most likey those aren't rust spots? Probably run off of wet insulation that has dripped through soffit  vent holes Mike

[Beth n Rod 1,279]

Could also be a mud-daubers nest (wasps).

Soft rinse is all I use in this case.

Rod

[mike movila 78]

Thank u guys I appreciated it.