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Almost definitely moles searching for grubs. Kill off the grubs, the moles go away. Mole trails are just below the surface and give that hollow spongy feel as they raise the sod and chew through the grass roots to get their prey. They often follow the edge of walks and driveways as they have no reason to dig under the pavement. Your pictures look exactly like areas of my yard. The grubs aren't helping your lawn either - you need to eradicate them.
Be grateful you are not dealing with feral hogs like we have here in Texas (and lots of other states)....your entire yard gets plowed up overnight by these little darlings...
Almost definitely moles searching for grubs. Kill off the grubs, the moles go away. Mole trails are just below the surface and give that hollow spongy feel as they raise the sod and chew through the grass roots to get their prey. They often follow the edge of walks and driveways as they have no reason to dig under the pavement. Your pictures look exactly like areas of my yard. The grubs aren't helping your lawn either - you need to eradicate them.
They actually prefer earthworms but will eat any insect it encounters. That's why appying milky spore doesn't always work. Moles need to be trapped.
Rain brings worms to the surface and moles come up to feed on them. Lawns having auto sprinklers are great for moles as they get enough water to keep the worms on tthe surface. If you see robins pulling worms out of the ground you can bet moles are doing the same from below. Moles don't hibernate so they are out and about year round.
I've got the same problem here in NE PA. Looked out the window one night and saw a skunk digging around. Probably eating grub but wasn't going to go outside for a closer look.
Almost definitely moles searching for grubs. Kill off the grubs, the moles go away. Mole trails are just below the surface and give that hollow spongy feel as they raise the sod and chew through the grass roots to get their prey. They often follow the edge of walks and driveways as they have no reason to dig under the pavement. Your pictures look exactly like areas of my yard. The grubs aren't helping your lawn either - you need to eradicate them.
With 10 acres, killing grubs is very expensive! Don't the grubs turn into Japanese Beetles?
We have moles and voles in our land (not a lawn, just land). The dog loves to hunt them and she's quite successful in capturing them when we let her dig them up. They don't leave the holes on the surface, that's the dilloes we have - and the dog leaves huge holes that we have to fill. But one of those pictures showed a multi-toed paw print, so you definitely don't have dilloes - they have claws instead of toes. Whatever critter you have is going after the voles and/or grubs in your lawn. Get a hound or cur - they make excellent vole/mole hunters.
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