Anyone use Deer Hunter's Hide Tanning Formula?

[Pete112288]

Bought a bottle of this stuff years ago. Still have it around. I used it on one rabbit hide. It was so long ago and I butchered it in the process of fleshing it so I can't base anything much off that experience. The bottle I have is at least 4 years old, I assume its probably not the best to use it now. Anyone else have experience with it? I was thinking I would try it the next time I get a coyote. Not sure though if it would be good to try using the old bottle. Any experience or opinions?

[duckmen1]

I tried this formula and followed it exactly how it said to. Did not like it. Working on an ammonium alum tan which is much cheaper and is coming out much better.
The bottle you have made my coyote skin really greasy and it won't get soft and dry. It keeps leaking oils some how.