The one process I like to use for any sinew is put it in a zip lock bag. Once in the bag, place some of your urine in it. I then carefully, very carefully try to get as much air out as possible and seal it. I will leave it outside for not only the smell that will come but any leaks that may occur. I'll leave it in the zip lock for 4 or more days, depends on when I can get to it. After I'm satisfied or have time I'll clean then off with water, make sure you clean them good because later on you won't like the taste. Once they're cleaned individually I'll place them flat on a piece of wood in the shade and let them dry. Doesn't take long to dry, just a day. Then from there its up to you. Just remember, this is how I process it, plenty of other ways, this is just one option for you.