Fresh mulch like grass cuttings and leaf litter can create conditions ticks like, while inorganic mulch and cedar chips are effective at keeping ticks away.
Is The Mulch Barrier In Your Yard Actually Attracting Ticks? Here's What We Know

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Fresh mulch like grass cuttings and leaf litter can create conditions ticks like, while inorganic mulch and cedar chips are effective at keeping ticks away.