CG, are you actually hunting these moles? Wait till you see some movement underground, then blast away with the .22?
No way do I have the kind of time to do something like that.
If that ain't it, what are you doing with the .22?
I have a guy I've used in the past. He's got the spike-type of trap and he comes out and sets 'em up. More often than not, the trap snags the little bastard. (Gotta dig him up with a screwdriver. Ugly little varmints.) But at $20 a pop, there might be a cheaper option. This windmill thing sounds like it might work. Chemicals ain't a good idea either, because of the dogs.