Egg Stains on vinyl siding

Has anyone encountered any egg stains on vinyl siding? Customer has 2 nice egg slams on upper portion of house. I use the x-jet(with simple cheryy/12.5 % solution). Does anyone know if this will work on egg stains. Customer tells me it happened a few weeks ago…so the egg had time to bake in nicely.
Thanks

You will need to use a chemical that is high in butyl. Butyl fights protein stains. 12.5% SH will clean a lot but I’m not to sure if this is the answer for egg stains.

Well,…just to answer my own post for future searchers, I did the job today using the basic x-jet formula solution(12.5 %, simple cherry and f-13). With a little elbow grease and a brush it came out 95%. I kept the customers expectations low…not knowing how well it was going to work. He was very happy…and so was I. It did leave a slight "shadow’ from being on the siding for about 2 weeks

I might be wrong, but I think Gutter Zap is higher on butyl concentration than F13.