Wood siding (mabec) cleaning

What do you folks use on wood siding, We have a scrub coming up on a place however im not sure what solutions to apply

Thanks all

Sorry I think this should have gone in the pressure washing forum

I like to use roof wash on cedar siding. If your not familure with it, it’s a hydrogen peroxide based cleaning solution. I’ll usually pre-treat the whole house n let it sit for about a half hour. You could also always go with diluted bleach