This is one of 2 times during the year when moles are the most active - fall. The other is spring. At these 2 times of year, the soil is usually moist enough to tunnel through in search of food (earthworms, grubs, and other invertebrates). Perhaps the best method for dealing with mole damage is trapping. Here is a weblink for information on trapping moles: http://icwdm.org/handbook/mammals/Moles.asp
A couple pointers - set the traps in the feeding tunnels (the tunnels that are just below the surface and sink in when you step on them). Do not place traps over or near the volcanic like mounds (these are excavations of deeper tunnels). To determine if a feeding tunnel is active, and a good place to set a trap, step on it to collapse it, then wait until the next day. If the tunnel is raised up again, you know its an active tunnel and is still being used by the mole.
Good luck - try to be patient and sometimes you may need to move traps around several times before actually catching any moles.