I have had several neighbors tell me that they are having problems with moles.  I have had my share of moles since I live next to a sinkhole.  I tried pellets, traps, gum, gassing them with a hose attached to my tailpipe and even performing a war-dance.  None of these worked.   I finally found a product that actually works.   It is called Taliprid.  It is a worm like bait and it actually kills the pest.   It is available on line at:  www.pestcontrolamerica.com.  I also read that Lesco, now "John Deere Landscaping" may carry it.   It is expensive, about $40.00 for 20 worms, but it works and much cheaper than replacing a lawn.  Good Luck.