In the suburb I live in any carrion that the raccoons, coyotes and bears can smell will be gone on the first night so I am pretty much forced to resort to resomation. I don't think my wife would appreciate it if I brought the remains inside before it was odourless!
Attached is a pic of a bear skull I prepared using the KOH method, a large specimen like this can take a lot of time to clean by natural decomposition or even in a container populated with carrion beetles. The sinus tissues are particularly slow to get rid of without chemical assistance. I hope the picture attachment works, I am doing this on my iPad and having difficulty uploading.
Nice job. We must have well fed bears,coyotes and raccoons, because they didn't bother with my dead crow at all. On a hot day, the plastic box with sand that was in did smell kinda rank, but it was near the garbage cans, so no one would know. I can understand using some additional cleaning methods for a larger animal, but if one is patient, the same can be achieved without the method you mentioned. It is good information to have, but I don't think I would want the danger of working with those chemicals and processes. But that's just me!