Here's his easy, inexpensive recipe for an effective homemade mole-repelling mix. 1 tablespoon castor oil 2 tablespoons liquid dishwashing soap 6 tablespoons water Mix the oil and soap in a blender until the mix has the consistency of shaving cream. Add the water and blend again. In a watering can, mix 2 tablespoons of "mole mix" with 2 gallons of water. Sprinkle the mix over mole-infested yard and garden areas. Apply the repellent after a rain to make sure it soaks into the soil.