Okay, our yard is the ONLY yard in the ENTIRE neighborhood with moles. We have been battling them since 1990. They are still winning. We have tried: spring-type mole traps, several different mole poisons, grubex to get rid of their food source, castor oil, moth balls, in ground sonic wave thingies (yes, I'm a girl), whirly gigs, and several suggested home remedies. We have even tried using all of the above at the same time. We still have moles. Short of hiring an exterminator, any suggestions?