Without pressure washer, I wonder how they manage to clean off those dead decaying fat between those chains, they arent that much gap between the chains either too from what I've seen.
I read they used oil and mutton fat for rust prevention. I'm guessing human fat would work if mutton fat works. So, no need to clean thoroughly? lol. Also the other guy said Sandbaths, but since he didn't reply directly with your name, you might not have seen his post.