I finally found a good use for the huge garden tub in my bathroom.
I neglected to get a photo of the first one I cleaned, but this one is proving to be a bit more stubborn. I don’t want to let it soak too long or the wood will warp. What worked pretty well with the first one was to make a paste out of Oxyclean, rub it in, let it sit for a while and then rinse it in a shower. I was hoping to keep things a bit more contained this time because it got a little messy, but I think I’m going to have to resort back to plan A and see if I can get it a little cleaner.