Standard Capacity Seed Guardian (Squirrel Proof) With Metal Inner Feeder. If you are looking for the ultimate protection from squirrels then look no further than this tough durable guardian feeder. Made from top quality materials this feeder has been built to last. The internal feeder can be separated from the cage with ease (but not by squirrels). The internal feeder is durable and tough metal seed feeder with a UV stabilised polycarbonate tube, weather resistant and stainless steel handles. This squirrel proof feeder is strongly constructed but can be dismantled quick and easily for the all important cleaning.