One of the best ways to keep squirrels from eating at and spilling your bird feeder is to give them their own feed cake and place to dine. Squirola is a 2.5-lb. cake of whole corn, black oil sunflower seeds and peanuts. One of these cakes is the equivalent of nine ears of corn! When placed in an accessible area away from bird feeders, squirrels will eat this cake and not dominate your bird feeders.