From what I have read, moles are difficult to get rid of. There are lots of things that people try with mixed results, such as putting garlic down the holes. The best solution I found was using castor oil.
The theory is that worms, which are part of a moles diet, are coated in castor oil which makes them less tasty and the moles will move on to another area. There are castor oil repellants commercially available, but I was able to find a recipe on WA state fish and wildlife page.
This works best in areas where the ground will be watered from time to time. The treatment should last 30-60 days and may need to be reapplied before the moles relocate.
Source: http://wdfw.wa.gov/living/moles.html
By Stella from Manchester, WA
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