Here's our meat on day 1. Guy changed the cloth every day around dinner time. It's simple: just take the old cloth off and wrap the clean cloth around the meat. Finis. Back in fridge.
(The old cloth will have blood on it. Guy rinsed the old cloth well, hung it to dry and kept it in a clean bucket until all the cloths were ready to be put in the washer.)< Here's the meat on day 5. It's gotten darker. Not too much mold, at least not yet. The humidity was at 75F before the meat went in the fridge. After the meat went in, the humidity rose to 85F, which is still ok, but Guy wanted to keep it to 75F. So he bought two rechargeable silica gel canisters ($17.73 incl. shipping) and put one in the fridge. The humidity came down to 78F, which made him happier. He also put an open box of baking soda in the fridge to keep it fresh-smelling.
Here's the other end of the meat. So far, everything is going well. Every time he takes the meat out, we start drooling. Soon we'll be tasting these delicious steaks.