If I chop the castor and sack real fine is there any thing else I can add to it, to make it more attractive to bobcats? Will Vaseline work to keep it all together or I also have propelyne glycol. what would work best?

I’m not a pro lure maker but have caught a few cats. I personally would use the glycol over the Vaseline. Just enough to make a good paste. It’ll catch cats for you.

Thanks for the information, greatly appreciated.

I agree with what was stated above... You can also use glycerin to help anti-freeze and help create a paste like substance. I, too, am no expert- but I'm in the information overload stage of trying to learn all that I can.

Use glycerin. Glycol seems to develop an odor after a length of time.