The Q&A Archives: Controlling Moles

Question: How do I control moles? I missed the program about the treatment to use to rid the yard of moles.

Answer: Moles create characteristic mounds and tunnels that rise above the soil level; voles have trails through tall grass, but have been known to use mole tunnels to feed on roots and bulbs. It sounds like you have moles at work. There are many ways to try to get rid of moles. Moles feed on grubs and earthworms living in your lawn or garden. The damage they do is to plant roots while they are tunneling. Your first consideration should be to control the grub population in your lawn with beneficial nematodes or milky spore powder, both of which are spread on the lawn. Another tactic is to flush the tunnels with water (best done in the spring), or protect your garden by burying a fencing of small mesh, tightly woven hardware cloth. You could also try trapping them live in a Havahart trap. Moles hate the smell of castor oil beans, and Gardener's Supply has a repellent containing castor oil. The company also carries a Mole Chaser that creates underground vibrations that deter the critters. You can reach them at 1-800-863-1700 or visit their website at Good luck.

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