Archived Gardening Message Boards
Topic: Landscaping & Garden Care
Posted by KimmSr from MI-4a/5b on 2009-01-20 09:02:00
A study done at Michigan State University in the 1980's showed that 1 pint of Castor Oil mixed with water into a 1 quart hose end sprayer and applied over 2,500 square feet would drive out the resident mole and keep others from moving in for 6 to 8 weeks at which time that would need to be reapplied. This would be fairly expensive and the products you find on the store shelves containing Castor Oil do not have enough and are labled to cover a much larger area than would be effective.