How do I keep squirrels off my almond tree?

They keep knocking the almonds down, and they don't even eat them! Every year for the last 5 years Ive ended up cleaning almonds off my gr, I have tried to deter them, tried putting a cone around the base of the tree, they jump onto the branches, tried to hang things to distract them-didn't work, even tried to scare them with the pellet gun- Nope didn't work. aside from netting the tree, any new ideas? I heard of hanging moth from the tree in pantyhose, gotta try this one