Great idea, I use a have a heart trap, with a small twist. 
  
After the little squirrels get caught in the trap, I put them in a nice big trash can while they're still in the trap........... 
  
Did I forget to mention that the garbage can is full of water.  The little suckers keep getting in my attic, so I take a rather drastic approach, I relocate them to the afterlife.  Down to just a few squirrels.