Lawn Diseases
Best Mole Killer: Why Most Mole Poisons Cannot Work
Moles are not rodents, so the grain baits sold for them cannot poison them — and grub control will not remove them either. What extension services do recommend.
Bromethalin Mole Bait (artificial worm form) with marker flags
Victor Poison Moleworms with Tunnel Locator Flags (10-pack) Review
★★★★☆ 4.3/5
our editor rating how we score4/5 from 1,363 shoppers at Amazon — their number, not ours.
$16–$21
Typical price · 10 worm baits plus 5 tunnel locator flags; one bait per active tunnel
Affiliate links — see our disclosure. Commissions never influence verdicts.
The only bait in this group that ships the thing most people actually get wrong: five flags for marking which tunnels you have confirmed are active.
Our Verdict
The best-designed box on this shelf, and the reason is five pieces of plastic. Every worm-form bait works on the same principle — Purdue Extension states moles cannot be baited with rodent foods because they eat earthworms, so a scented artificial worm is the form that fits. Where these products fail in practice is placement: a lawn is full of abandoned runs that look identical to live ones, so bait goes into a dead tunnel and the buyer concludes the product is fake. Including tunnel locator flags turns the standard field test into something you can actually track — press a section of ridge flat, plant a flag, come back in a day, and if the soil is pushed back up, bait that run. Same active ingredient class as the premium brand at a fraction of the price. Same hazard too: bromethalin has no antidote, and NPIC states rodenticides have the same effect in any mammal, so keep it away from a digging dog in use and in storage.
✅ Pros
- Includes 5 tunnel locator flags, which addresses the actual failure mode
- Worm form matches the mole's real diet, unlike grain or pellet baits (Purdue)
- Among the cheapest per bait of any worm-form product
- Single feeding, no trap-setting skill required
- Same active ingredient family as the professional standard
⚠️ Cons
- Bromethalin has no antidote and affects any mammal that eats it (NPIC)
- Pet ingestion signs may be delayed 8–12 hours or several days
- Ten baits is fewer than the professional carton, so a large network needs two boxes
- Still useless on an abandoned run — the flags help, they do not decide for you
- Prevents nothing; new moles can move into the same tunnels
Product type
Bromethalin Mole Bait (artificial worm form) with marker flags
Active ingredient
Bromethalin — EPA Reg. No. 149-19
Price range
$16–$21
Coverage
10 worm baits plus 5 tunnel locator flags; one bait per active tunnel
Best for
A first mole bait purchase — the flags make correct placement realistic
our editor rating
4.3 out of 5
Where our facts come from
Label read on EPA's label database
EPA Reg. No. 149-19
We opened this product's accepted label on EPA's own Pesticide Product Label System — the strongest source available for what a product is registered to do.
What we found when we read it
EPA PPLS registry read 2026-08-02: registered product name 'SL566', EPA Reg. 149-19, bromethalin 0.025%. Nine alternate brand names, including Victor Poison Mole Worms, Victor Moleworms Kill Moles, Sweeney's Poison Mole Worms and Kill Moles Poison Mole Worms — one registration behind several shelf names in two brand families. Bromethalin 0.025% matches this record. Latest accepted label 2024-01-17. WSU FIELD TEST recorded 2026-08-20. WSU Extension Snohomish County (Dave Pehling, Mole-Hill Gazette 04/07) ran a limited field test of the Talpirid worm-bait format, staking baits in daily-use runs to recover them: "In every instance I could find no sign of feeding, though the baits were consistently walked over, buried, pressed into the tunnel walls or just pushed out of the run." Smearing earthworms on two baits did not change it, and the mole continued to occupy the runs. He also records the manufacturer stating the bait "had been thoroughly tested on our western moles and was proven effective", so the refusal was on the species the claim named. LIMITS, which matter: his own word is limited — one site, one mole, not a trial — the animal is a WESTERN mole (Scapanus), where most of the country has the eastern mole (Scalopus aquaticus), and it dates from 2007. Kept in the catalogue with the rating unchanged, because one limited test on a different species is not grounds to overturn a format extension publications otherwise recommend. But the honest expectation is an attempt to verify by probing the run afterwards, not a certainty.
Where this page and the container disagree, the container wins — the label is the legal authority on rates and restrictions. How to read one yourself.
Where This Product Matters
Matched against each state's actual disease, weed and pest pressure.
Arizona
Arizona hub →⚖️ Do not buy this for an Arizona yard. University of Arizona Cooperative Extension states it plainly: “We do not have moles in Arizona.” Soil being pushed up here is almost certainly a pocket gopher — a rodent that does eat plant material and therefore CAN be baited, which is the opposite of a mole. Identify by mound shape: a gopher approaches the surface at an angle so its mound is a fan or tear drop with the plug off to one side; a mole pushes soil straight up, so its mound is round and conical.
Colorado
Colorado hub →⚖️ Almost certainly the wrong animal here. CSU Extension fact sheet 6.521 records moles as “rarely found in Colorado, and only on the eastern plains” — the Lower South Platte counties (Logan, Sedgwick, Phillips, Morgan, Washington, Yuma) plus Baca in the south-east. Denver, the Front Range and the Western Slope are all outside mole range, where CSU points instead at voles, pocket gophers, prairie dogs or Wyoming ground squirrels.
Iowa
Iowa hub →Moles along field edges
Oregon
Oregon hub →Moles (heavy in soft, damp valley soil)
Common questions
Common Questions
How much does Victor Poison Moleworms with Tunnel Locator Flags (10-pack) cost?
Victor Poison Moleworms with Tunnel Locator Flags (10-pack) typically runs $16–$21, covering 10 worm baits plus 5 tunnel locator flags; one bait per active tunnel.
What does Victor Poison Moleworms with Tunnel Locator Flags (10-pack) treat?
Victor Poison Moleworms with Tunnel Locator Flags (10-pack) targets Moles.
What is the active ingredient in Victor Poison Moleworms with Tunnel Locator Flags (10-pack)?
Bromethalin — EPA Reg. No. 149-19, registered under EPA Reg. No. 149-19.
What is the biggest downside of Victor Poison Moleworms with Tunnel Locator Flags (10-pack)?
Bromethalin has no antidote and affects any mammal that eats it (NPIC)
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