can it be put in a plastic bottle after its done, or is glass better?

Oils like that and other sun rendered oils are fine in my experience to hold them in plastic. Far less dangerous to accidental breakage. I have had some oils of that nature for 40 plus years without breakdown or compromise of any kind.

thanks bob!

Starting to become a believer.
I have set a total of 6 traps in 2 locations, and used a couple different lures. In 5 days I have caught 2 fox, one at each location, and both on the tail oil.

John is correct but I add it all bones and a very tiny amount of hair. I'll burp my jars until it starts producing oil, then I just leave them loosely screwed on. Like maybe half a thread. Flys here wont try and mess with it after it forms a layer of oil.. It is still gassing very slowly. I've lost a few bottles of pure oil because I filled them to full and sealed them up tight!

Good work FriarTuck.

Maybe I missed it, but I wonder if BTO works for bobcats.