I was given one of these and soon found that it needs to be hung well clear of any place from which a squirrel can jump onto it. Once a squirrel has got onto the nut cage, it will make mincemeat of the wire mesh cage. Dont underestimate the ability of a squirrel to jump amazing distances, and even to rearrance things. I got up one morning to find that they had had managed to free the supporting cable and the feeder was lying on the ground, completely chewed out of shape (and empty). I only got it to work when I carefully hung it by a wire from a tree in such a way that there was no way a squirrel could jump from the side or from below. Since finding this ideal location not one squirrel has defeated it. My dear woodpeckers now visit it every day, despite it's battered appearance from it's previous unsuccessful use. The bad news is that the nearest suitable tree is almost out of sight of my house! Buy it if you can find a location with at least a metre of clearance all around it. Otherwise learn to love squirrels! Grrrr