Something like the Ruddings Wood Large Metal Squirrel Proof Blocking ... other unwanted visitors, too. Hanging feeders surrounded by a protective cage are the safest option.

This large bird feeder will hold 50 pounds of sunflower seed. Winters are long and cold for our feathered friends. I used to have a small bird feeder that had to be refilled every two or three days.

You hang your feeders inside the cage. The idea is that the cage holes ... but also deters adult squirrels and large birds,” he adds. Tried & Tested: The Squirrel 6 Port Adventurer with Guardian ...