Does Kaput Ground Squirrel Bait work in New Hampshire?

There's no honest way to say it works here, because the labeled target species — California ground squirrels — does not live in New Hampshire. The product can be genuinely effective where that species is actually present, using an anticoagulant mechanism placed in bait stations within 100 feet of a structure, but applying it to any NH wildlife problem is off-label, illegal, and simply won't work, because you'd be baiting for an animal that isn't there. If something is digging in your NH yard, the correct first step is identifying which of NH's actual burrowing animals — chipmunk, gray squirrel, woodchuck, vole, or mole — you're dealing with.

What NH animal is actually digging in my yard if it's not a ground squirrel?

Most commonly it's an eastern chipmunk, a small, striped, ground-dwelling rodent that digs extensive burrow systems, often near stone walls, woodpiles, or foundations. It could also be an eastern gray squirrel (which nests in trees rather than burrows, but digs to cache food), a woodchuck (much larger burrows with a prominent main entrance), a vole (shallow surface runways in lawns), or a mole (raised ridges from tunneling, not open burrow holes). Each of these needs a different identification approach and a different, legally appropriate control method — none of them are covered by this ground-squirrel-specific label.

Is it illegal to use this bait on NH wildlife?

Yes, in the sense that matters most: pesticide labels are legally binding documents under federal law, and using a product on a species or in a location outside its label is an off-label application, which is prohibited regardless of intent. This product's label restricts use to California ground squirrels within 100 feet of a structure — there's no provision covering NH chipmunks, gray squirrels, woodchucks, voles, or moles. 'The label is the law' isn't just a safety slogan; it's the actual legal standard that governs whether a pesticide application is permitted.

Is diphacinone dangerous to pets even if I never use this product?

Diphacinone itself, wherever it's used under its correct label, is a genuine hazard to non-target animals — it's an anticoagulant the label describes as highly toxic to mammals and birds, and pets or wildlife that eat either the bait or a poisoned rodent are both at risk. That's exactly why New Hampshire's mismatch matters practically, not just legally: there's no scenario here where the benefit (controlling a species that doesn't exist locally) would justify introducing that hazard to your yard. If any anticoagulant bait exposure is suspected, contact a veterinarian or a poison-control hotline immediately rather than waiting.

What should I do instead if I have burrowing wildlife in my NH yard?

Start with correct identification — burrow size and shape, activity pattern (daytime vs. nighttime), and location (near structures, in open lawn, near stone walls) all help narrow down whether you have a chipmunk, gray squirrel, woodchuck, vole, or mole. From there, choose a method or product actually labeled for that species, since each behaves and responds differently. If you're not confident in the identification, or the activity is extensive, a licensed professional can identify the animal correctly and apply a method that's both effective and legal for New Hampshire, avoiding the wasted time and hazard of an off-label product.

Why does a New Hampshire pest company even carry information on this product?

Because this product is sold nationally and shows up in searches from NH homeowners who assume 'ground squirrel' means any yard-digging animal — it doesn't, and we'd rather tell you honestly that it's the wrong product than let you buy something that can't work here. Documenting the real, legitimate use case (California ground squirrels near structures, where that species is a genuine pest) lets you understand what the product actually does, while being clear that New Hampshire's chipmunks, gray squirrels, woodchucks, voles, and moles need a different approach entirely.

Daniel Brady · NH-Licensed Pesticide Applicator · License #782664

How to Use Kaput Ground Squirrel Bait by Scimetrics

Situational

Diphacinone 0.0025%Imidacloprid 0.0250%

Kaput Ground Squirrel Bait is a diphacinone anticoagulant bait legally restricted to California ground squirrels within 100 feet of a structure — and that species does not occur in New Hampshire. If you're seeing burrowing or digging in an NH yard, it's virtually always an eastern chipmunk, an eastern gray squirrel, a woodchuck, a vole, or a mole, not a ground squirrel, and none of those animals are covered by this product's label. Because the label is the legally binding document governing where and on what species a pesticide can be used, applying this bait to any NH wildlife problem is both off-label and ineffective — the product was never tested or approved for that use. The right first step for an NH yard is identifying the actual animal, then choosing a method or professional actually matched to it, rather than buying a nationally marketed product without checking whether your local pest is even the one it targets.

At a glance

Efficacy: Situational
Best job: Reducing California ground squirrel burrowing within 100 feet of a structure, in states where that species is present
Format: Specialty outdoor rodenticide bait, labeled specifically for California ground squirrels near structures
Technique: Moderate technique

The honest verdict

Does this product actually work?

The verdict on this product

SituationalModerate technique

Situational

Effective for its actual, narrow job — California ground squirrels near structures — and simply the wrong product for New Hampshire.

Where the labeled species actually lives, an anticoagulant bait placed correctly within 100 feet of a structure can genuinely reduce California ground squirrel activity — that's a legitimate, narrow job the product is built for. In New Hampshire, though, the honest verdict has nothing to do with the chemistry: the target animal simply isn't present. The digging or burrowing NH homeowners see is virtually always an eastern chipmunk, an eastern gray squirrel, a woodchuck, a vole, or a mole — none of which this label covers — and applying any pesticide outside its labeled species and region is not just ineffective, it's against the law. The label is the law; for NH, that means skip this product and identify the animal first.

Best for

California ground squirrels within the labeled 100-foot structure zone, in the western states where that species is a real pest.

Skip it for

New Hampshire yards, full stop. The label's target species doesn't live here, and NH's burrowing/climbing 'squirrels' are eastern chipmunks and eastern gray squirrels — different animals not covered by this label.

Read the label first

What it is — and what it's really for

The label is the law. Here's the honest read on the format, the one job it does well, and the job people wrongly buy it for.

Format

Specialty outdoor rodenticide bait, labeled specifically for California ground squirrels near structures

Indoor / outdoor

outdoor

Residual

Not applicable for NH use; where legally used, follow the label's bait-station schedule and monitoring interval

Target pests

California ground squirrels (Otospermophilus beecheyi) — the ONLY species this label covers

Best job

Reducing California ground squirrel burrowing within 100 feet of a structure, in states where that species is present

Active ingredient

Diphacinone (0.0025%), Imidacloprid (0.0250%)

Not for (honest)

Any New Hampshire wildlife problem — the labeled target species does not occur in NH, and using a pesticide off-label (wrong species, wrong region) violates federal law

The technician's method

The technique walkthrough

Where DIY succeeds or fails is in the placement, patience, and the small pro moves the label never mentions. Follow the label; these are the technique details on top of it.

Moderate techniqueNot applicable for New Hampshire useTools:Gloves (where legally applicable), A bait station appropriate for the labeled species

There is no correct NH technique for this product, because there is no legal, labeled New Hampshire target for it. What follows is the label's actual use case, so you understand what this product does where it applies — and why that's not here.

Confirm your actual species first
Before considering any burrow or den treatment, identify what's actually digging in your yard — in New Hampshire, that's almost always a chipmunk, gray squirrel, woodchuck, vole, or mole, none of which this product is labeled for.
Pro move
Use burrow size, entrance shape, and daytime activity patterns to narrow down the species, or get a professional identification before buying any product.
Read the label's species and geographic restrictions
This product's label restricts use to California ground squirrels and only within 100 feet of a structure vulnerable to rodent invasion — read those restrictions before purchasing, regardless of where you live.
Caution
Using any pesticide outside its labeled species or region is a federal label violation, not just an efficacy problem.
Where the species is actually present (outside NH)
In states where California ground squirrels are a labeled problem, bait is placed in bait stations within the 100-foot structure zone per the label's station-density and monitoring directions.
In New Hampshire: stop here and choose an NH-appropriate method
Since there is no legal target species for this product in NH, do not apply it here. Identify the actual animal and select a method or professional service matched to it instead.

Habits that decide it

Do & don't

Identify the actual animal in your NH yard before buying any rodenticide.
Read a product's label species and geographic restrictions before purchase.
Treat 'the label is the law' as a real legal constraint, not a suggestion.
Choose an NH-appropriate, correctly labeled method for chipmunks, gray squirrels, woodchucks, voles, or moles.
Ask a licensed professional for identification if you're unsure which animal you have.

Don't

Don't buy this product for an NH chipmunk or gray squirrel problem.
Don't assume 'ground squirrel' means any digging yard animal.
Don't apply any rodenticide off-label — it's both illegal and won't work.
Don't assume anticoagulant baits are low-risk to pets and wildlife.
Don't broadcast bait beyond a label's structure-distance restriction, even where the species is present.

The honesty moat

Where it works vs. where it fails

No product fixes everything. This is the honest boundary — the situations it genuinely handles, and the ones it simply won't.

Where it works

The target is a confirmed California ground squirrel population within the labeled 100-foot structure zone, in a state where that species occurs
Bait stations are placed and monitored per the label in a legally applicable location

Where it fails

Used anywhere in New Hampshire — the labeled species is not present
The actual animal is a chipmunk, gray squirrel, woodchuck, vole, or mole — none are covered by this label
Applied beyond the 100-foot structure distance restriction even where the species is present
Used without first confirming species identification

Don't throw money away

Mistakes that waste the product

Buying this product for an NH chipmunk or gray squirrel problem

The label doesn't cover either species, so the application is both off-label (illegal) and won't be effective — you're using the wrong tool entirely.

Fix

Identify the actual animal first, then choose a method or professional service matched to that species.

Broadcasting bait beyond 100 feet of a structure, even in a state with California ground squirrels

The label specifically restricts placement to within 100 feet of a structure vulnerable to rodent invasion; broadcasting beyond that is a label violation.

Fix

Follow the exact distance restriction printed on the label, regardless of how much burrow activity you see farther out.

Assuming anticoagulant baits are low-risk because they're 'just for rodents'

Diphacinone is highly toxic to non-target mammals and birds, including pets and any predator or scavenger that eats a poisoned animal.

Fix

Treat any anticoagulant bait as a genuine hazard to pets and wildlife, and avoid it entirely where it isn't a labeled, legal fit.

Calibrated expectations

What to expect — and when

There is no results timeline to give for New Hampshire, because there is no legal application here — the honest expectation is that this product does nothing appropriate for an NH yard.

In New Hampshire
No appropriate use case exists; the labeled target species is not present, so there is no result to expect from applying this product here.
Where the species is legitimately present (outside NH)
Per the label, an anticoagulant bait taken over multiple feedings within the 100-foot structure zone reduces ground squirrel activity over days to weeks.

When results plateau

For NH readers, the relevant 'plateau' is really a mismatch: no amount of correct technique makes this product work here, because the target species doesn't exist in the state. The fix is identifying your actual animal, not adjusting how you apply this bait.

Know the ceiling

When to stop DIY & call a pro

Persistent burrowing wildlife in an NH yard is a species-identification and, often, a wildlife-regulation question — not a job for a product built for a species NH doesn't have.

You can't confidently identify the animal digging in your yard
Chipmunks, gray squirrels, woodchucks, voles, and moles all leave different signs and need different approaches — misidentifying the animal wastes time and money on the wrong tool.
Burrowing or den activity is extensive or recurring each season
A persistent, established population usually needs more than a single consumer product, regardless of species.
You're unsure whether a species is protected or regulated under NH Fish & Game rules
Some wildlife is protected or has specific legal handling requirements; a licensed professional can navigate that correctly.

For any NH burrowing-wildlife question — chipmunks, gray squirrels, woodchucks, voles, or moles — Anchor's licensed NH technicians identify the actual animal and apply a method that's both effective and legal for New Hampshire. Free inspection, same-day service across southern and central New Hampshire.

Not sure what's digging in your NH yard?

Get a Free inspection (603) 785-0118

Before you treat

Is it safe for pets & kids?

The short version lives here; the full per-species verdict lives on this product's pet-safety page.

Diphacinone is an anticoagulant the label itself calls highly toxic to mammals and birds, including pets and any predator or scavenger that eats a poisoned animal — this is a genuine hazard product, not a low-risk one, wherever it's legally used. In New Hampshire, the safest and correct choice is simply not to use it, since there's no labeled target here.

Re-entry: Where legally applicable, keep bait stations locked and inaccessible to children, pets, and non-target wildlife at all times.

If there's an exposure, call

ASPCA Animal Poison Control: (888) 426-4435 Pet Poison Helpline: (855) 764-7661 Northern New England Poison Center: (1-800) 222-1222

See the full per-species pet-safety verdict for this product

New Hampshire context

New Hampshire doesn't have ground squirrels

California ground squirrels are essentially a western/plains species and do not occur in New Hampshire. What NH homeowners actually see digging, burrowing, or climbing around a yard is almost always an eastern chipmunk (small, striped, ground-burrowing) or an eastern gray squirrel (larger, tree-dwelling, not a burrower) — genuinely different animals with different biology, different damage patterns, and different legal/product options. Woodchucks, voles, and moles round out NH's common burrowing wildlife. Before buying any rodenticide or bait, confirm which of these you actually have — Anchor Pest Services serves Manchester, Nashua, Concord, and the surrounding towns with correct wildlife identification and NH-appropriate, legal treatment options.

Service area

Southern New Hampshire

Anchor Pest Services · NH license #782664 · NEPMA member · family-owned since 2017.

Common questions

Frequently asked

Sources & further reading(3)

[1]
EPA Pesticide Product Label — Kaput Ground Squirrel Bait (diphacinone 0.0025% + imidacloprid 0.0250%), Reg. No. 72500-24
Verified actives, the labeled species restriction to California ground squirrels, and the 100-foot structure-distance restriction
epa_labelverified 2026-07-14
[2]
Pomerix Pesticide Database — Kaput Ground Squirrel Bait
Product format and use-directions facts (facts only, not the efficacy verdict)
manufacturerverified 2026-07-14
[3]
NH Fish & Game — Nuisance Wildlife
New Hampshire's actual burrowing/nuisance wildlife species and legal handling context, confirming California ground squirrels are not among them
govverified 2026-07-14

Written & reviewed by

Verified

Daniel Brady

NH-Licensed Pesticide Applicator · License #782664 (NHDAMF, RSA 430)

Daniel Brady is the New Hampshire–licensed applicator behind Anchor Pest Services, a family-owned pest control company serving the Manchester area since 2017.

Verify license

Last updated July 2026

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Professional Pest Control

The Right Species ID Before the Right Treatment

New Hampshire doesn't have ground squirrels — but it does have chipmunks, gray squirrels, woodchucks, voles, and moles that all dig differently and need different treatment. Anchor Pest Services identifies the real problem across southern and central New Hampshire. Family-owned since 2017, NH license #782664.

Get a Free inspection (603) 785-0118

Correct NH wildlife identification
NH-licensed applicators (#782664)
Free inspection — same-day service across southern NH

NH License #782664 · No obligation · We answer in person

Keep Exploring

How to Use Kaput Ground Squirrel Bait by Scimetrics

Does this product actually work?

What it is — and what it's really for

The technique walkthrough

Confirm your actual species first

Read the label's species and geographic restrictions

Where the species is actually present (outside NH)

In New Hampshire: stop here and choose an NH-appropriate method