when it was legal to bear bait in our state , i would try all different smells to see what would come into them ,when i would cook hickory smoked bacon the coyotes would come to that every time ,so some times when i was tree stand hunting i would take one of those battery operated socks put bacon grease or estrus scent or what ever i was trying to hunt that day ,and lower it down from a string after plugging the battery in ,i had a bull elk tear the place apart one time after putting that warm estrus out