Here's one you don't hear too often. Geranium oil!!! Don't know much about it. It just seems to work.

Other ingredients you can add to castor to attract beaver are numerous. For example pennyroyal oil, poplar bud oil, cherry oil, bergamot oil, birch oil. Plenty of variations. By adding some of these oils, they will also attract rats and coons.

Prepared lures kick butt. But if you have the time, want and desire, mix a few and find out what works for you!