"After reading the other reviews, perhaps I haven't had it long enough or the squirrels have enough food otherwise and leave this alone...For the past few weeks this feeder has been covered in birds - sparrows, goldfinches, woodpeckers, & cardinals. Whatever they kick out, the squirrels get off of the ground and it seems to be working well so far.
A suggestion that might help - my sister has a square screen on the ground under her birdfeeder, held just off the dirt by 4 small clay flower pots. Any seed that falls from the feeder lands on the screen, giving the squirrels a snack. I made a 2' square from 1 X 2s, stapled a layer of welded wire mesh on it (for strength), and a layer of thin screen on top of the mesh (so the seeds wouldn't fall through). This gives the squirrels a place to hang out and allows air flow so the seed doesn't get moldy. I also throw a scoop of seed out on the screen when I fill the feeder.
So, that's my rating...if it changes I'll let you know!"