Our favorite lure....... Beaver Castor based with a heavy dose of oils and herbs hilghly attractive to predators and beaver alike. 
Used at majority of our predator sets, will create a insane digging response in coyotes.  
 
Oils create response from beavers on Castor mounds even when castor sets are failing.  
 
EXTREMLY ATTRACTIVE TO BOBCATS.  If I had to choose only one lure to have in my trapping bag, this would be it.