In my experience its best to corner them behind your "outside" freezer. Then put down your drink and go grab your pellet gun. If you discover at this point that your out of ammo, DO NOT FEAR! Go back in the house and break open a #4 shot gun shell, lead shot, not steel. I tried steel the first time and it did not have sufficient kinetic energy. You will probably notice that the shot will not chamber well in your air gun, pick up your drink and think about this.
Now, instead of trying to load the shot in the chamber roll it down the barrel. Now sneak quietly back into the garage and over to the freezer. Lean around the freezer and point the barrel at the ****. See how the shot rolls right out of the end of the barrel?
Go back into the house and re-load. Now, obviously you will need some type of wadding to hold the shot in the barrel, or you can re-load and then just shmear cream cheese over the end of the barrel.
Brace yourself with a stiff drink and head back into the garage. Now sneak back around behind the fridge and slowly ease the barrel toward the varmit. If you go real slow and quiet don't be surprised if he tentatively, sniffs, then licks the cream cheese on the end of the barrel. (If you have all ready blasted him with steel shot do be surprised)
Now, while he is licking it LET HIM HAV.... oops, don't forget to close the door that leads from the garage to the kitchen because if he runs in there with a face full of lead shot and cream cheese, OH MY GOD THE DOGS! Now this is gonna get real, real ugly. At this point grab a splitting maul and make a quick mental note of where you soon to be ex-girlfriends family heirloom type furniture is and go sick ninja rambo on his ass. This may not be the BEST method, but I can guarantee it will work. Here is a hint, use the back of the splitting maul.