All I ever did for many years was to take castors from a different river system, turn one castor inside out in put it in a jar with a lid. When at the set, add a little water from the stream to the jar, shake vigorously for 5 seconds, and pour out on a castor mound. You can do this over and over for years with the same castor if you like. Never had any spoilage. Caught every beaver I tried to catch with something that simple. Sometimes I would add a squirt of the oil sacks to the jar as well. All very simple and 100% natural.

We use the sac oil by itself YJ. Keep it way from the castor and use it as a change up.

I patented that system. Let me figure out how much you owe me for copyright infringement!

Most effective lure Ive found is to keep the castors and sac oil from ONE beaver in a seperate jar. Use as needed.

So, do you add anything, or just grind up castor from one beaver, and then squeeze the oil in?

Thanks SW I haven't kept even one single oil gland, maybe I should start!

That sac oil is the best stuff you can use to pull in the last 1 or 2 beavers.

Can you mix sac oil from different beaver together?