
Do make sure they are moles and not gophers. And then do a search of the archives. We just had a discussion on those pesky critters! LOL Boy, they are a pain I know!
After that, call your local co operative extension service and see what they are doing for them.
We had a good radio discussion about them just a few weeks ago here and I got some good ideas which I have put into use. I'll report back by the Fall and tell if they worked. One is putting dog hair in and around an area you don't want to them to be. So far this is working but it's just now spring and they are just getting active. We'll see if this holds up through out the season! The second thing that people swear does the trick is Juicy Fruit gum, placed as far down the holes as you can reach. And no, they don't chew it..LOL..there is something in that flavor that repels them.
Moles are very territorial and don't put up with any others very close. Chances are you don't have very many at all, one mole can cover a bunch of square yards!
good luck, hope you get a handle on things and let us know how it goes.
LQ