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Posted by KimmSr from MI-4a/5b on 2009-01-20 09:02:00

Everyone with decent soil will have moles because the food of preference for them is earthworms, not the grubs you have been told, so spreading some poison to kill grubs will do little (except also kill your earthworms) to eliminate the moles. Traps are really no better since as soon as you eliminate one mole another will move into the vacancy you have created. There is a product thAt looks like an earthworm that contains a poison that you put into the moles tunnel that will kill your mole (one mole needs about 1/4 acre to live) but fairly quickly another mole will move into that vacancy.
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.


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