A neighbor of mine used to put out ears of corn on a "trick" feeder he mounted to a tree in his yard. The squirrel would climb out and the ear of corn would flip upside down making the squirrel hang upside down to feed. He got a real kick out of watching them. Then one day he had an electrictian working at his place and he found where squirrels had entered the attic and chewed lots of the wires. He knew it was squirrels and not rats because he saw 2 leave the attic as he entered. He no longer feeds sssquirrels. BTW, they have 4 cats that live at their place and the squirrels ignored them. Sometimes they would hang low on a tree trunk and "bark" at them but pretty much ignored them.