I have purchased the two best rated mole traps, the Victor out O'sight 0631, and the Wire Tek 1001. I set the traps according to the instructions in several different locations during a three weeks period. In each case the moles tunneled around the traps and enjoyed a very happy life under my lawn. I became very frustrated, and decided to try a mole repellent recipe found on the internet. I mixed  the recommended concoction of 1/2 cup castor oil, 1/2 cup dishwater detergent and then used 3 tablespoons of that mix to make one gallon solutions which i sprayed on the areas showing mole activity. The moles disappeared within two days and have not reappeared for the last two weeks. I will continue to spray the solution for several weeks to make sure the critters do not come back.