Save the pellets !!!
I finally settled on repelling or blocking them but it depends on your feeder design. My feeders are hanging from a double shepherds hook hanger, that in turn is sitting on top a pole. Squirrels can reach them but once they try to mount them, they just swing away. Then I installed a blocker on the pole that they can't get past. The only feed they get, is what is cast on the ground, by the birds. This set-up, works even when we are not there and save on pellets. Can you post a picture of your setup?
Before I came up with the blocker, I greased the pole and it did not last long. I wrapped fly paper around the pole and that worked great, until it got covered with hair, flies, wasps and other stuff. .......
My "Homemade" blocker, is simple, not pretty and works great ...
Be Safe !!!