Do you have a link to that Bill D? I can't quite imagine how a squirrel would accomplish that. Ours can't even cling to the glass tube without sliding, let alone simaltaneously hold the weighted bottom up and the weight of another squirrel to boot. We've had the thing for a year and neither our rats or squirrels have managed to crack it and not for want of trying. First time in 30 years we've had any luck, especially with rats. Maybe were you are, you have the weight lifting Russian squirrels. LOL

They still try to eat the seed scattered on the ground, but the dogs love that rodent adventure.