GRANDPA'S 100 BUCK CHALLENGE! I'm taking a break out in the barn. I really love looking out over my mole-free pasture. (But mostly I'm hiding from Grandma. She's always got some kind of "honey-do" thing waiting for me.) Listen, when it comes to gettin' rid of moles, I've been around the block a few times. I've seen it all. Heard all the stories.      One thing I know for certain... TRAPPIN' moles is the only absolute way to get rid of 'em. Period. End of story.      But, what the heck, I'm willing to expand what's left of my mind. Maybe learn something new.      So here's the deal.      If you can satisfy me that there's a better, easier, quicker and final way to get rid of each mole in your yard 'n garden forever – a way that truly works every time beyond a shadow of doubt – I'll send you a check for $100.00 and tell the world all about it.      Grandma scolded me the other day, "you old coot, you've been smelling tractor fumes too long. You can't afford to give away that kind of money!"      "No worries," I grinned. "Nobody's gonna come up with anything better'n trapping."      Is there? back to Grandpa's letter