Answer: Probably the most effective and least expensive way to keep moles from invading your raised beds is to line the bottom and sides with hardware cloth. You can purchase rolls of hardware cloth (with 3/8 to 1-inch holes) and simply unroll it on the bottom of the bed, then attach two overlapping layers (one for each side) and roll them up along the sides of the beds. Then fill your bed with soil and plant your veggies. The moles won't be able to to dig through the hardware cloth and your plants will be safe.
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