Shallow Divots in Lawn: Foraging Damage Decoded

Shallow divots — little scoops that stop within an inch or three of the surface — are foraging marks, not burrows: squirrels caching and retrieving nuts, skunks drilling for grubs at night, birds probing at dawn, or a dog freelancing. Because three of those four are hunting grubs, a lawn suddenly covered in divots is often really a message about what's living under the turf.

Most likely causes

  • Squirrels — golf-ball-size scoops with soil flicked aside, scattered widely
  • Skunks — neat cone-shaped holes 1 to 3 inches across, appearing overnight in clusters
  • Birds — pencil-to-inch-wide probe marks concentrated where grubs are shallow
  • Dogs — larger ragged patches with claw drag marks and thrown soil

Compare the possible causes

Possible cause Key signs When it happens How likely
Squirrels Shallow scoops 1 to 3 inches wide, dug quickly and abandoned, spread across the whole lawn rather than clustered Daytime; heaviest in fall while burying nuts and from late winter into spring while digging them back up Very common
Skunks grubbing Cone-shaped holes 1 to 3 inches across and a few inches deep, drilled straight down in groups, appearing overnight, sometimes with flaps of turf flipped over Nighttime, spring through fall, peaking in late summer and early fall when grub larvae feed just under the turf Common
Foraging birds Small conical probe marks, pencil-width up to an inch, dozens in one section of lawn, made by visible birds working the grass in the morning Daytime, especially early morning; busiest in spring and again in late summer Common
Dogs Fewer, larger, rougher patches — torn turf, parallel claw furrows, soil thrown backward in a spray — often at fence lines, gates, or one favorite spot Any time the dog is out; often tied to boredom, heat (digging cool beds), or a scent worth investigating Common

Visual clues to check

  • Check the spread: divots scattered evenly across the lawn suggest squirrels; a dense cluster in one area suggests grub hunters
  • Time-stamp the damage: new holes at dawn mean skunks or raccoons overnight; new holes by evening mean squirrels, birds, or the dog
  • Look at the shape: neat cones point to skunks, tiny probe marks to birds, sloppy scoops to squirrels, ragged trenches to dogs
  • Do the tug test in the damaged area: turf that peels up like loose carpet has root damage from grubs below
  • Count grubs under a lifted square foot of sod: finding more than a handful of white C-shaped larvae explains everything
  • Look for corroboration: nut shells for squirrels, a faint musky odor for skunks, birds visibly working the lawn at breakfast

The causes in detail

Squirrels

Each squirrel divot is one nut transaction — a fast dig, deposit or withdrawal, and a half-hearted patting-down. Because caches are deliberately spread out (scatter-hoarding), the divots are too, which distinguishes squirrel work from the concentrated patches grub-hunters leave. The lawn looks measled for a few weeks each fall and spring, then recovers with nothing more than a rake.

Skunks grubbing

A skunk locates each grub by smell and extracts it with a precise nose-and-claw drill, so its holes are individually tidy but collectively dense — a productive patch of lawn can gain dozens in one night. That density is diagnostic and so is the timing: damage that materializes between dusk and dawn in the same area night after night is skunk (or raccoon, whose version is messier, with sod rolled back in strips). Either way, the animals are grading your grub population for you.

Foraging birds

Robins, starlings, grackles, and flickers stab the turf hunting worms and grubs, leaving fields of tiny divots. A modest scattering is business as usual for a healthy lawn. What deserves attention is a sudden frenzy — flocks of starlings hammering one area for days — because birds concentrate where prey is concentrated, and that usually means grubs. The turf itself is barely harmed; the message underneath is the point.

Dogs

Canine divots don't match the neat geometry of foraging wildlife: a dog digs with alternating front paws and throws soil well behind it, leaving ragged, oversized scars. The locations tell the story — along fences means something interesting beyond them, shaded corners in summer means a cooling pit, and random fresh spots after a skunk visit means your dog smelled the grubbing and joined in. If it's a neighbor's dog or your own, this is the one divot-maker you can actually negotiate with.

When to worry

  • Divots multiplying nightly in the same area — the food source below is substantial and the visits will continue
  • Turf that lifts easily or browns in irregular patches alongside the digging — likely an active grub infestation
  • Raccoon-style damage (sod rolled back in strips) spreading across the lawn, which can total large areas fast
  • A skunk visiting nightly where an off-leash dog goes out — a spray or bite encounter is a matter of time
  • Divots plus mounds, tunnels, or open burrow holes, which moves you out of foraging territory into resident-animal territory

What to do now

  1. Diagnose the grubs first: lift a square foot of turf at the edge of the damage and count larvae — that answer drives everything else
  2. If grub counts are high, address the grub problem (beneficial nematodes and good lawn culture are reasonable first steps) and the nightly diggers lose interest on their own
  3. Rake divots flat, topdress with a little soil, and overseed thin areas in early fall or spring
  4. Let the lawn dry down a bit — grub-hunting is easiest and most rewarding in soft, moist turf
  5. Bring pets in at dusk and use lights and noise before letting dogs out at night while skunk visits continue
  6. Give a digging dog alternatives — exercise, shade, a sanctioned dig zone — and repair spots promptly so they don't invite rework
  7. If damage keeps escalating or a skunk seems to have taken up residence under a nearby structure, contact a licensed wildlife control professional

What not to do

  • Don't blanket the lawn with insecticide before actually counting grubs — a few grubs per square foot is normal and treatment-free
  • Don't approach, corner, or let a dog chase the skunk making the holes; a stamping, tail-raised skunk gives one warning
  • Don't lay chicken wire loose over the whole lawn — it's a mower hazard and the foragers work around it
  • Don't re-sod damaged areas while grubs are still active underneath; new sod feeds them and peels up just like the old turf
  • Don't punish a dog after the fact for old holes — it doesn't connect, and the digging cause is still unaddressed

Think you know the suspect?

These animals commonly cause this clue — see their full sign profiles:

Frequently asked questions

What makes shallow holes in the lawn overnight?

Overnight divots are almost always skunks or raccoons digging for grubs. Skunks leave neat cone-shaped holes 1 to 3 inches wide in clusters; raccoons do messier work, rolling back whole flaps of sod. Both are telling you the same thing — there's a food supply under your turf worth checking with a grub count.

How many grubs per square foot is a problem?

As a rule of thumb, zero to five grubs per square foot is normal background that a healthy lawn ignores. Somewhere around five to ten, damage risk depends on the lawn's vigor, and above ten the turf itself usually starts showing browning and loose, peelable sod. Animals may dig at lower counts than these — they're better at finding grubs than we are.

Will the divots heal on their own?

Mostly yes. Foraging divots from squirrels, birds, and skunks are shallow enough that surrounding grass fills them within weeks in the growing season. Rake them level so mower wheels don't scalp the edges, topdress and overseed anything larger than a fist, and fix the grub situation if there is one — otherwise tonight's diggers will undo the repair.

Why did the digging start all of a sudden?

Because the menu changed. Grub larvae feed shallowest in late summer and early fall, rain softens the soil, and squirrels hit peak caching in autumn — all of which can switch a quiet lawn to a busy one in a week. Sudden concentrated digging is worth a grub check; sudden scattered digging in October is usually just squirrel season.

Related yard clues

Yard Holes Small Holes in Yard With No Mound: What's Digging? Small holes in your yard with no dirt mound are usually caused by squirrels, chipmunks, foraging birds, earthworms, or ground-nesting insects. The size of the hole, how deep it goes, the time of year, and whether the damage appeared overnight can narrow down the cause quickly. Read the guide → Yard Holes Holes in Flower Beds Overnight? Meet the Night Shift Flower beds dug up overnight are almost always animals hunting food, not making homes: skunks and raccoons dig for grubs and worms in the soft soil, squirrels bury and retrieve nuts, cats use loose beds as litter boxes, and across the South armadillos root through beds nose-first. Each leaves a different style of hole, so one careful morning inspection usually names your visitor. Read the guide → Yard Holes Holes in Lawn With Dead Grass Around Them: What It Means When holes and dead grass show up together, the dead grass is usually the underlying story: grubs kill turf roots and then skunks, raccoons, and birds dig holes going after them, while vole runways, yellowjacket ground nests, and dog urine spots each pair dying grass with their own style of hole. Figure out whether the grass died first or the digging came first, and the diagnosis usually follows. Read the guide →

Still not sure? Compare with these clues

Lawn Problems Grass Torn Up in Patches Overnight: Who's Digging and Why Grass torn up in patches — especially damage that appears overnight — is almost always an animal digging for grubs under your turf. Raccoons flip and roll back chunks of sod, skunks drill small cone-shaped holes, and crows peck and pull tufts by day. The digger is the symptom; the grubs underneath are the cause. Read the guide → Lawn Problems Brown Patches in Grass: How to Read What Killed the Turf Brown patches in your grass are most often caused by fungal disease, white grubs eating the roots, dog urine, or summer drought dormancy. The pattern is the diagnosis: circles point to fungus, turf that lifts like carpet points to grubs, and small spots ringed with dark green grass point to dog urine. Read the guide → Yard Holes One-Inch Holes in Lawn: Identify the Digger by Size Holes about an inch wide in a lawn are most often the work of voles, young chipmunks, ground-nesting bees, or — in wet, low-lying yards — crayfish. An inch is a telling size: it's too big for most insects and too small for rats or full chipmunk burrows, so checking depth, soil, and location will usually name the digger. Read the guide →