I also inject moles with lead.
There was one that really damaged our yard. I put down the tailgate on my truck, put a 6-pack on it, got a lawn chair and my rifle, and I waited. Not too long, either. I saw him burrowing under the ground; the grass shook and a tunnel was being formed. I shot him through the ground 2 times, just to make sure.
When I told my wife (you ready for this one?) she asked if I had buried it!
I have an intermittent problem with moles, but as I've got 3.2 acres, I don't generally worry about it. There's a guy with traps I can call -- he charges me $20 for every trapped (and killed) mole. That got expensive, so I just blew it off. The damn things and their tunnels aren't pretty, but hell, I've got too much area to worry about it any more.
Now muskrats in my pond? That's a whole 'nuther critter. They damage the pond dams, and that's a much bigger problem, so I pull out my Marlin .22 and administer hot lead injections to those bastards. Usually one shot, one kill.