I've tanned a couple of muskrats and a fox with Protan. Minnesota trapline Products and The Snareshop both carry it. Pretty simple, turns out a good tan, and is a chrome tan so it won't wash out. Thin skinned animals like those are not too bad. I expect thicker skinned animals would be entail alot more work to break the leather. Doing it yourself saves a couple of bucks, gives you the pleasure of having done it yourself and takes a bunch of time. Sending it out has the advantages of a pro doing it (if you choose the right tannery) and save you time, but costs more.