I put one cup of alum and one cup of non-oidized salt in about 2/3 of a five gallon bucket of warm water and put the hides in. After two or three days I remove, rinse and scrape the flesh off. I add another cup each of alum and salt to the water and put the hides back in for about seven days. After that I remove, rinse the hides and hang them up until they are slightly damp. then, using my hands, I pull and stretch the hides until they turn white. It's very cool to see them turn white and soften as I work them. Then I lightly shampoo them with a very weak shampoo mixture (I use Pert Plus) only on the fur side them rinse it out and hang to dry. Makes a very soft, nice smelling hide. I have some that are a couple of years old and the fur is still on and not shedding.