According to the Washington Department of Fish and Wildlife, the majority of a mole's diet consists of earthworms. Moles also enjoy eating grubs, snails, slugs, ants and crickets. Moles form main tunnels from their nests to areas to forage for food. According to the Washington Department of Fish and Wildlife, normal-size city lots will house one male or two female moles. Moles can damage a flower bed with their tunneling to and from nests or looking for food.
Purchase unrefined Castor oil from your local pharmacy. Pour in a blender. Add dish-washing liquid to the oil. Plug in and turn on the blender. Blend on high speed for 2 minutes.
Turn off blender. Add 6 tablespoons of water to blender. Turn blender back on. Blend on high speed for 2 minutes.
Fill a sprayer with one gallon of water. Add 2 tablespoons of the mixture from the blender. Stir well.
Spray the soil of the flower bed with the mixture (from step 3) until the ground is moist. Repeat until entire flower bed surface is covered. Repeat weekly until the moles leave the flower bed area.
Reapply the mixture monthly to prevent moles from returning to the flower bed.