Here is a simple recipe for this mole repellant:
Mix together until foamy: Two parts castor oil, one part Joy dish soap. (One part may equal one cup or one tablespoon, depending on the severity of the problem. If you have a lot of moles, make a big batch and use it daily or share with friends.)
To use, add two tablespoons of mixture to one gallon of water. Spray in and around mole holes. This usually works within a day.
Does not kill moles just makes them go away.