I bought 2 lovely fresh beef femur bones with lots of marrow in the middle for Skippy and Emilu. I give them to them outside for about a half hour, then have been putting them back in the fridge. I froze 2 other ones that I bought at the same time. The thing is, there is still alot of marrow in them, and I think the dogs would enjoy them for a long time, but they've been in the fridge for about 2 weeks now, and I'm not sure what to do with them. They haven't cleaned them out enough to just let them lay around like bones to chew on. How do you "take care" of marrow bones?