My daughter just returned from Montana where the ground squirrels were "thick" this year and she had a blast! In fact she wanted to stay a couple more days the action was so good.
She started out using the new 150 gr TALON heads - sharpened up - and unless she made a head shot, like C-500 mentioned in his message above, the tough ground squirrels would be able to escape since the 32# bow she was using just didn't put the hurt on them.
Anyhow, applying some corrective action in the form of sharp 2-blade Zwickey DELTA broadheads, the ground squirrels were finally at her mercy.
She is going back in a couple of weeks with her 42# bow and give the TALONs another opportunity, but she already has her back-up Zwickeys sharpened up and in the quiver.
I still have not had the opporunity to use the TALON on small game yet, but it sure seems like it would be a great small game point.
Hopefully, I will be able to provide an update in the near future.
:~)
Shoot straight, Shinken