Sorry, didn't see the reply until now. I have a nothing special bird-feeder, but two things make it harder for squirrels to get to: 1) it is suspended, from high above, by a rope around a tree branch; it is high enough that they cannot jump up to it from below (well, it is high enough now, anyway, since I saw them doing that) 2) just above the bird feeder is a dome, with a hole in the center, through which the rope passes. There is a stick which the rope is tied around, which keeps the dome just above the bird feeder. If the squirrel climbs down the rope from above, the dome keeps them from getting to the bird feeder.