N orJVI al:
Thank you for your suggestion. Your theory that my liking of Barry Manilow’s music has somehow angered the Gods of Rock and Roll and that I must undergo ritual cleansing in order to remedy the situation was very insightful.
Unfortunately you are wrong Because:
A: Barry Manilow Rocks (he writes the songs that make the whole world sing,) and
B: Even if he dosn’t (perish the thought) I somehow suspect the Gods of Rock and Roll would choose something other than Groundhogs as their vehicle of vengeance. I mean if it was Menudo digging holes in my fields I might agree with you, but Groundhogs?
Pundit:
Thank you again, for another excellent suggestion. I am certain however that electricity as you’ve described it wouldn’t work (actually it would, but we are talking enough juice here to power a city block.) I have an electric fence and some knowledge of things electrical, so let me explain.
Lay an electrical fence wire on the ground, turn the fence on, and stand between the wire and its “ground” post. Feel anything? Nope.
Now hook the wire back back up and turn the fence on and grab the wire!
You are now on the ground doing what the locals call the “Funky Chicken.” This by the way is considered great fun around here.
“Come here I want to show you something in the pasture”
“Okay, is the fence on?”
“No, look.” He climbs through.
“Oh okay” Starts to climb throuh, accomplice lurking by switch turns fence on. Funky Chicken.
This is how the neighbors welcome the new guy who just moved down here from the city 
The thing is, when you grab the fence you are the only conduit to ground. You get hit with 100% of the juice. If you just pass it through the ground it gets diluted very quicky.
There is a “bug zapper” type contraption that I saw on the net for rats. Too small for hogs though.
Funnefarmer:
Your suggestion of Fellatio Interruptus Castration is far to horrible to contemplate.
AHA:
Though it’s not in the archives here, (that I could find) I recall an article by Cecil debunking the use of Sonic repellents against rodents, and I’m not about to argue with him.
Boris B:
Yes these are GROUNDHOGS. MARMOTA MONAX. Not moles,mice,hamster,squirrel,chipmunk,shrew, nor wombat,vole,lemur,Opossum, or finch. They are the same vicious bastards that were responsible for Bill Murray’s troubles in GROUNDHOG DAY and CADDYSHACK both (and don’t tell me that’s coincidence!)
The silenced .300 sniper-rifle you provided a link to looks very cool. Again I can’t believe That I can by Sniper rifles and Strychnine coated seeds over the internet. Kind of scary. Now, who was that guy who called us “Goofs?”
I am not using giant lightning rods! It could take years for a strike.
The windmills might work, but that’s getting kind of silly.
While your dog may be tough, mine have learned that Wisdom is the better part of valor as far as messing with Groundhogs goes, and have become sissies.
I think flooding will be difficult because the Groundhogs tunnel vertically and create chambers that would form air pockets. You would need to flood them long enough to use up the oxygen. I have a couple of 55 gallon drums a pickup and a garden hose. That ain’t gonna cut it.
The idea of pouring liquid manure down their holes so that the have to swim through **** in order to escape only to have their ****ing heads get blown off by me, waiting at the exit with a shotgun does have a certain appeal.
I have no access to liquid nitrogen and would hate to kill myself figuring out how to pour it down a hole.
Eve:
I used to live in NYC and all I can is that at least the Groundhogs won’t take your wallet, or shoot back. Yet.
Converting a leafblower into a groundhog euthanasia device sounds like an excellent idea. I was wrong to have dismissed exhaust gas out of hand because of my bad experience with Smoke bombs. I will try this if the Juicy Fruit and seeds doesn’t work.
If that doesn’t work I will launch a concerted multi-pronged attack in early spring in an attempt to decimate their ranks before they breed and spread.
While I might not be able to muster a horde of ruthless teenaged Marmot bounty-hunters armed with autoloading, and silenced sniper rifles (and would have second thoughts about having them run around what is essentially my back yard.) I should be able to put something together.
If that doesn’t work I will get the Hog-sucker, build a windmill, Freeze some nitrogen and drink myself into a permanent stupor.
As far as posting at rec.hunters or something as has been suggested, well do you think they would have come up with Juicy fruit, Liquid Nitrogen, or electroshock therapy?
Thanks again, will post results as I have them.