Day old doughnuts are one of the best bait for bears.
Bacon grease is the best bear bait you can use.
Dump the bacon grease on the ground around your bait pile (donuts whatever) and every bear that visits the bait will track that bacon smell everywhere he goes.
Other bears in the area will backtrack that bear to find that bacon they are smelling.
It doesn’t take long for every bear in miles to find your baitpile.