Clean Pellet Soot off Cedar shake siding

[mkmh]

Time to clean up from a long winter of burning. Anyone know of any products, tips or tricks for getting soot off the wood siding?
I have a pressure washer and i'm hoping there is some miracle product that I can mix in to clean it up.
BTW - I have a messy direct vent setup (no rise). Gotta add a rise above the Ridgeline this summer or i'll be dealing with this every spring!

Thoughts?

 

[sinnian]

tsp, bleach, and a brush

DO NOT use the power washer on the shakes, you'll push water underneath them!

 

[mkmh]

Excellent, thanks..I will give that a shot

 

[billb3]

Even if you are rinsing with just normal house pressure with a hose, try to aim down. Climb up on a step ladder if need be.