We bought a log home on the lake and the previous owners stained it grey. We'd like to bring it back to the original color and stain it a color to blend in with the woods. We've been told the best way to get rid of the old stain is to pressure wash with corn cob. This not only seems time consuming, but is extremely expensive! In addition, it's hard to find someone to do it. Is this really the only way to go?