Skip to main content
PetLawn & GardenTruck & AutomotiveClothingPoultryHeating & CoolingHorseSporting GoodsOutdoor Power EquipmentFencing & GatesLivestockOutdoor LivingPet & Animal PharmacyToolsHome ImprovementFarm & RanchBoots & ShoesTrailers & TowingHome Decor & FurnitureWild Birds & WildlifeToysGift CardsServices Propane RefillTrailer RentalGarden CenterFeed CenterSame Day DeliveryPetVet ClinicPet WashGrooming at PetsenseDog Training at PetsenseTractor Supply RxPet InsuranceWag!

"Savings and Offers"

Weekly AdSaleClearance

"More Options"

Weekly AdWhat's NewTractor Supply AppEarn Rewards with Neighbor's ClubHometown HeroesLife Out Here BlogTSC Exclusive BrandsTop BrandsClearance ItemsBattery FinderOutdoor Power Equipment Parts FinderHitch Finder

Spend $49.99 to unlock Free Delivery on most orders

|
Learn More
Order statusTSC Credit CardsWhat’s newPetsenseWeekly Ad
​

Sign In / Enroll

Get rewarded!

​

Menu

Search

Home

Sign In

Cart
4.4
(236)
4.4 out of 5 stars. 236 reviews
product-image
Shop all Tomcat

Tomcat 4 lb. Bromethalin Rodent Bait Chunx

4.4

(236 Reviews)

|

Item # 101484399

$36.99
A woman outside with a dog
A woman outside with a dog
  1. Home
  2. /
  3. Lawn & Garden
  4. /
  5. Pest Control
  6. /
  7. Animal & Rodent Control
  8. /
  9. Animal & Rodent Bait
  10. /
  11. Tomcat 4 lb. Bromethalin Rodent Bait Chunx

  1. Home
  2. /
  3. /
  4. Animal & Rodent Bait

Tomcat 4 lb. Bromethalin Rodent Bait Chunx

Shop all Tomcat
Tomcat 4 lb. Bromethalin Rodent Bait Chunx

Item # 101484399

Stocked & Ready
Tomcat Tomcat 4 lb. Bromethalin Rodent Bait Chunx
Tomcat Tomcat 4 lb. Bromethalin Rodent Bait Chunx


Get everything you need
Tomcat 4 lb. Bromethalin Rodent Bait Chunx
4.4(236)

Tomcat 4 lb. Bromethalin Rodent Bait Chunx

$36

.99

Tomcat Outpost Rodent Bait Station
4.1(16)

Tomcat Outpost Rodent Bait Station

$13

.99

Tomcat Rat and Mice Bait Station
4.4(34)

Tomcat Rat and Mice Bait Station

$24

.99

Tomcat 4 lb. All-Weather Rodent Block Bait Chunx, 1 oz. Chunx
4.6(174)

Tomcat 4 lb. All-Weather Rodent Block Bait Chunx, 1 oz. Chunx

$29

.99

Neighbor's Club logo
Neighbor’s Club Members earn points with purchases.

Sign in or Join Now

Shop all Tomcat
Tomcat 4 lb. Bromethalin Rodent Bait Chunx

Item # 101484399

Stocked & Ready
Tomcat Tomcat 4 lb. Bromethalin Rodent Bait Chunx
Tomcat Tomcat 4 lb. Bromethalin Rodent Bait Chunx

Subscription options

$36.99

$36.99

Save $1.85 (5%)

Save 5% today and on all future orders

Conveniently pickup or deliver on a schedule you choose

No commitment – easily cancel anytime

$36.99

Shopping at

Grassland (franklin) TN

Delivery to

Free standard delivery on online footwear & Clothing purchases of $49 and over.

​

Get everything you need
Tomcat 4 lb. Bromethalin Rodent Bait Chunx
4.4(236)

Tomcat 4 lb. Bromethalin Rodent Bait Chunx

$36

.99

Tomcat Outpost Rodent Bait Station
4.1(16)

Tomcat Outpost Rodent Bait Station

$13

.99

Tomcat Rat and Mice Bait Station
4.4(34)

Tomcat Rat and Mice Bait Station

$24

.99

Tomcat 4 lb. All-Weather Rodent Block Bait Chunx, 1 oz. Chunx
4.6(174)

Tomcat 4 lb. All-Weather Rodent Block Bait Chunx, 1 oz. Chunx

$29

.99

Neighbor's Club logo
Neighbor’s Club Members earn points with purchases.

Sign in or Join Now

Say goodbye to critters with this rodent control. Tomcat with Bromethalin Bait Chunx contain the active ingredient Bromethalin, excellent for proven control of high rodent populations and severe infestations. Made with food-grade ingredients, Bait Chunx kills rodents in 2+ days. With proven combination of palatability and effective control, Bait Chunx are the only way to go. See for yourself and give Bait Chunx a try today!

  • Excellent for knockdown of rodent populations and severe infestations
  • Bait Chunx offer proven combination of palatability and effective control
  • Bromethalin is an acute, non-anticoagulant active ingredient
  • Kills by affecting nervous system (Bromethalin is an ATP Inhibitor, which prevents the transfer of energy across nerve cells)
  • Bait Chunx kill rats and mice in 2 or more days after consuming a lethal dose
  • Rodents will cease feeding on Bait Chunx after consuming a lethal dose, requiring less bait to be used compared with other anticoagulant baits
  • Each block kills up to 12 mice, based on no-choice laboratory testing
  • Formulated with an optimal blend of ingredients and low wax content for maximum palatability and weatherability
  • Unique block shape and edges preferred by rodents that like to gnaw
  • Bait Chunx contain holes for placing on rods in a bait station, or can be secured using nails or wire
  • Due to a quick knockdown when compared to anticoagulants, more rodents can be controlled with less bait
BrandTomcat
Country of OriginMade in USA
Active IngredientsBromethalin
Animal TypeMouse, Voles, Rats
Application MethodOther
Area of UseHome, Farm
Concentrated or Ready to UseReady to Use
FeaturesExcellent for knockdown of rodent populations and severe infestations
FormChunks
Indoor/OutdoorIndoor and Outdoor
Longevity1 month
OrganicNo
Package Quantity1
Package Size4 lb.
Product Height7.625 in.
Product Length7.75 in.
Product Weight4.56 lb.
Product Width8 in.
Manufacturer Part Number22244

Have a question?
Start typing your question and we'll check if it was already asked and answered.
1 - 10 of 50 Questions
Sort by
Newest questions

Q: My husband threw these blocks in our strawberry patch and later it rained. will the chemicals in this leach to our plants and strawberries?

a month ago
2 Answers
  • Product Manager - Ag
    A: Tomcat Bromethalin Bait Chunx are weather-resistant but will eventually break down with moisture. Remove any visible bait with gloves to prevent non-target exposure. Bromethalin is expected to degrade in soil and is not likely to leach significantly; however, due to a lack of data on plant uptake (e.g., strawberries), replacing the topsoil is recommended. The label requires placement away from edible gardens and use within bait stations outdoors. For further questions, contact Motomco Customer Service.
    a month ago
    Helpful?

Q: If my 20lb dog was found chewing on a block will it kill him?

a month ago
2 Answers
  • Product Manager - Ag
    A: Consuming bromethalin bait is potentially harmful or lethal to dogs. The risk of harm depends on the amount of bait consumed, when the ingestion occurred and the age, weight, gender, health and genetics of the dog. Any ingestion should be immediately reported to the poison service number on the product packaging (1-877-854-2494) or a veterinarian.
    a month ago
    Helpful?

Q: Can it be used to kill squirrels

2 months ago
1 Answer
  • AI-generated, Human-approved
    A: This product is only approved to control the species listed on the label, such as rats, mice, and meadow voles. It has not been tested on ground squirrels or flying squirrels, and it cannot be legally recommended for use on species not specifically listed.
    2 months ago
    Helpful?

Q: How many big blocks are in the container?

2 months ago
1 Answer
  • A: Howdy neighbor! The 4 lb. container of Tomcat Bromethalin Rodent Bait Chunx holds approximately 64 individual 1-ounce blocks. Each chunk is specially designed with a pre-drilled center hole so you can easily secure it inside your tamper-resistant bait stations. This bulk size gives you plenty of bait to effectively manage and eliminate tough rodent problems around your property.
    2 months ago
    Helpful?

Q: Can these be broken up into smaller chunks so they can be placed in vole holes and tunnels?

3 months ago
2 Answers
  • Product Manager - Ag
    A: The label directions do not allow blocks to be broken up, or to be allowed to be used in tunnels.
    3 months ago
    Helpful?

Q: Is Tom Cat bait chunks effective with eliminating moles or voles?

4 months ago
2 Answers
  • Product Manager - Ag
    A: This product is only approved to control the species listed on the label (norway rats, roof rats, house mice, meadow voles and a few other listed species). It is an effective tool to control meadow voles. We haven't tested it on moles or any other "non-target" animals and can't legally recommend this bait for use outside of the specific species listed on the label.
    4 months ago
    Helpful?

Q: Does this work for ground squrials

9 months ago
2 Answers
  • Product Manager - Ag
    A: This product is only approved to control the species listed on the label (norway rats, roof rats, house mice, meadow voles and a few other listed species). We haven't tested it on ground squirrels, chipmunks, rabbits or any other "non-target" animals and can't legally recommend this bait for use outside of the specific species listed on the label.
    9 months ago
    Helpful?

Q: Is there secondary poisoning with ise? Does the poison break down quickly once ingested by the rodent?

9 months ago
2 Answers
  • Product Manager - Ag
    A: Bromethalin and its active metabolite, desmethylbromethalin have been identified in tissues of animals. The length of time it remains in the tissue may vary with the amount consumed, the frequency of consumption, the specific organ or tissue, and differences in clearance rates between individuals or species. While secondary toxicity from bromethalin is theoretically possible, experimental laboratory studies have not clearly demonstrated it, and to the best of our knowledge, there are no confirmed cases of secondary poisoning in wildlife due to ingestion of bromethalin-killed prey. You can reduce the risk of potential secondary poisoning by following label instructions and placement amounts and monitoring the property for carcasses daily and discarding them promptly. Other strategies to reduce risk include providing extra supervision for pets or companion animals, restricting them from the area, or considering temporary relocation of livestock during the rodent control effort.
    9 months ago
    Helpful?

Q: Does it work for chipmunks

10 months ago
1 Answer
  • Product Manager - Ag
    A: This product is only approved to control the species listed on the label (norway rats, roof rats, house mice, meadow voles and a few other listed species). We haven't tested it on chipmunks, rabbits or any other "non-target" animals and can't legally recommend this bait for use outside of the specific species listed on the label.
    9 months ago
    Helpful?

Q: Will this work on flying squirrels?

11 months ago
1 Answer
  • Product Manager - Ag
    A: This product is only approved to control the species listed on the label (norway rats, roof rats, house mice, meadow voles and a few other listed species). We haven't tested it on ground squirrels, rabbits or any other "non-target" animals and can't legally recommend this bait for use outside of the specific species listed on the label.
    11 months ago
    Helpful?
1 - 10 of 50 Questions
  • Next

Q&As

Have a question?
Start typing your question and we'll check if it was already asked and answered.
1 - 10 of 50 Questions
Sort by
Newest questions

Q: My husband threw these blocks in our strawberry patch and later it rained. will the chemicals in this leach to our plants and strawberries?

a month ago
2 Answers
  • Product Manager - Ag
    A: Tomcat Bromethalin Bait Chunx are weather-resistant but will eventually break down with moisture. Remove any visible bait with gloves to prevent non-target exposure. Bromethalin is expected to degrade in soil and is not likely to leach significantly; however, due to a lack of data on plant uptake (e.g., strawberries), replacing the topsoil is recommended. The label requires placement away from edible gardens and use within bait stations outdoors. For further questions, contact Motomco Customer Service.
    a month ago
    Helpful?

Q: If my 20lb dog was found chewing on a block will it kill him?

a month ago
2 Answers
  • Product Manager - Ag
    A: Consuming bromethalin bait is potentially harmful or lethal to dogs. The risk of harm depends on the amount of bait consumed, when the ingestion occurred and the age, weight, gender, health and genetics of the dog. Any ingestion should be immediately reported to the poison service number on the product packaging (1-877-854-2494) or a veterinarian.
    a month ago
    Helpful?

Q: Can it be used to kill squirrels

2 months ago
1 Answer
  • AI-generated, Human-approved
    A: This product is only approved to control the species listed on the label, such as rats, mice, and meadow voles. It has not been tested on ground squirrels or flying squirrels, and it cannot be legally recommended for use on species not specifically listed.
    2 months ago
    Helpful?

Q: How many big blocks are in the container?

2 months ago
1 Answer
  • A: Howdy neighbor! The 4 lb. container of Tomcat Bromethalin Rodent Bait Chunx holds approximately 64 individual 1-ounce blocks. Each chunk is specially designed with a pre-drilled center hole so you can easily secure it inside your tamper-resistant bait stations. This bulk size gives you plenty of bait to effectively manage and eliminate tough rodent problems around your property.
    2 months ago
    Helpful?

Q: Can these be broken up into smaller chunks so they can be placed in vole holes and tunnels?

3 months ago
2 Answers
  • Product Manager - Ag
    A: The label directions do not allow blocks to be broken up, or to be allowed to be used in tunnels.
    3 months ago
    Helpful?

Q: Is Tom Cat bait chunks effective with eliminating moles or voles?

4 months ago
2 Answers
  • Product Manager - Ag
    A: This product is only approved to control the species listed on the label (norway rats, roof rats, house mice, meadow voles and a few other listed species). It is an effective tool to control meadow voles. We haven't tested it on moles or any other "non-target" animals and can't legally recommend this bait for use outside of the specific species listed on the label.
    4 months ago
    Helpful?

Q: Does this work for ground squrials

9 months ago
2 Answers
  • Product Manager - Ag
    A: This product is only approved to control the species listed on the label (norway rats, roof rats, house mice, meadow voles and a few other listed species). We haven't tested it on ground squirrels, chipmunks, rabbits or any other "non-target" animals and can't legally recommend this bait for use outside of the specific species listed on the label.
    9 months ago
    Helpful?

Q: Is there secondary poisoning with ise? Does the poison break down quickly once ingested by the rodent?

9 months ago
2 Answers
  • Product Manager - Ag
    A: Bromethalin and its active metabolite, desmethylbromethalin have been identified in tissues of animals. The length of time it remains in the tissue may vary with the amount consumed, the frequency of consumption, the specific organ or tissue, and differences in clearance rates between individuals or species. While secondary toxicity from bromethalin is theoretically possible, experimental laboratory studies have not clearly demonstrated it, and to the best of our knowledge, there are no confirmed cases of secondary poisoning in wildlife due to ingestion of bromethalin-killed prey. You can reduce the risk of potential secondary poisoning by following label instructions and placement amounts and monitoring the property for carcasses daily and discarding them promptly. Other strategies to reduce risk include providing extra supervision for pets or companion animals, restricting them from the area, or considering temporary relocation of livestock during the rodent control effort.
    9 months ago
    Helpful?

Q: Does it work for chipmunks

10 months ago
1 Answer
  • Product Manager - Ag
    A: This product is only approved to control the species listed on the label (norway rats, roof rats, house mice, meadow voles and a few other listed species). We haven't tested it on chipmunks, rabbits or any other "non-target" animals and can't legally recommend this bait for use outside of the specific species listed on the label.
    9 months ago
    Helpful?

Q: Will this work on flying squirrels?

11 months ago
1 Answer
  • Product Manager - Ag
    A: This product is only approved to control the species listed on the label (norway rats, roof rats, house mice, meadow voles and a few other listed species). We haven't tested it on ground squirrels, rabbits or any other "non-target" animals and can't legally recommend this bait for use outside of the specific species listed on the label.
    11 months ago
    Helpful?
1 - 10 of 50 Questions
  • Next

Similar Items

  1. Tomcat 5 lb. Bromethalin Rodent Meal Bait
    4.4 out of 5 stars with 65 reviews
    4.4 (65)

    Tomcat 5 lb. Bromethalin Rodent Meal Bait

    $34.99
  2. Tomcat Outpost Rodent Bait Station
    4.1 out of 5 stars with 16 reviews
    4.1 (16)

    Tomcat Outpost Rodent Bait Station

    $13.99
  3. Tomcat All-Weather Bait Chunx 4lb. Pail
    3.7 out of 5 stars with 3 reviews
    3.7 (3)

    Tomcat All-Weather Bait Chunx 4lb. Pail

    $29.99
  4. Tomcat 5 lb. Rodent Killer Pellets with Bromethalin
    4.4 out of 5 stars with 70 reviews
    4.4 (70)

    Tomcat 5 lb. Rodent Killer Pellets with Bromethalin

    $34.99
  5. Tomcat 4 lb. All-Weather Rodent Block Bait Chunx, 1 oz. Chunx
    4.6 out of 5 stars with 174 reviews
    4.6 (174)

    Tomcat 4 lb. All-Weather Rodent Block Bait Chunx, 1 oz. Chunx

    $29.99
  6. Tomcat 9 lb. All-Weather Rodent Bait Chunx, 1 oz. Chunx
    4.5 out of 5 stars with 104 reviews
    4.5 (104)

    Tomcat 9 lb. All-Weather Rodent Bait Chunx, 1 oz. Chunx

    $59.99
  7. Tomcat 18 lb. All-Weather Rodent Bait Chunx Blocks, 1 oz. Chunx
    4.4 out of 5 stars with 147 reviews
    4.4 (147)

    Tomcat 18 lb. All-Weather Rodent Bait Chunx Blocks, 1 oz. Chunx

    $99.99
  8. Tomcat Rat and Mice Bait Station
    4.4 out of 5 stars with 34 reviews
    4.4 (34)

    Tomcat Rat and Mice Bait Station

    $24.99
  9. Tomcat Bromethalin Place Packs Pail, 22-Pack
    4.6 out of 5 stars with 35 reviews
    4.6 (35)

    Tomcat Bromethalin Place Packs Pail, 22-Pack

    $34.99
  10. Tomcat 1 lb. All-Weather Rodent Block Bait, 4-Pack
    4.2 out of 5 stars with 34 reviews
    4.2 (34)

    Tomcat 1 lb. All-Weather Rodent Block Bait, 4-Pack

    $26.99
  11. Prowler 5 lb. Pelleted Rodent Bait
    3.9 out of 5 stars with 9 reviews
    3.9 (9)

    Prowler 5 lb. Pelleted Rodent Bait

    $44.99
  12. Tomcat 3 oz. Rat and Mouse Place Packs, 22-Pack
    4.5 out of 5 stars with 237 reviews
    4.5 (237)

    Tomcat 3 oz. Rat and Mouse Place Packs, 22-Pack

    $29.99

Reviews

Rating Snapshot

Select a row below to filter reviews.

5 starsstars

181
181 reviews with 5 stars.

4 starsstars

24
24 reviews with 4 stars.

3 starsstars

2
2 reviews with 3 stars.

2 starsstars

2
2 reviews with 2 stars.

1 starstars

27
27 reviews with 1 star.

Overall Rating

4.4
70 out of 93 (75%) reviewers recommend this product

Review this Product

Select to rate the item with 1 star. This action will open submission form.
Select to rate the item with 2 stars. This action will open submission form.
Select to rate the item with 3 stars. This action will open submission form.
Select to rate the item with 4 stars. This action will open submission form.
Select to rate the item with 5 stars. This action will open submission form.
Adding a review will require a valid email for verification
  • purchase
  • price
  • ease of use
  • quality
  • satisfaction
  • distance
  • results
  • packaging
1 to 4 of 236 Reviews .
1 – 4 of 236 Reviews
Sort by
Most Recent
South Florida
Reviews 2
5 out of 5 stars.

First choice for effective DIY rodent control

19 days ago
Have used Tomcat Bromethalin Chunks in the attic for decades, whenever we hear feet scurrying on the ceiling, roof rats, AKA black rats. No problem, we wear gloves. Not for squirrels, which make much more noise!
SweepstakesYes

Yes, I recommend this product.

Northwest Ct.
Reviews 18
5 out of 5 stars.

It works

a month ago
I have been using Tom Cat for a few years now and it works when we have issues.
SweepstakesYes

Yes, I recommend this product.

Brooklyn ct
Review 1
5 out of 5 stars.

Bait review

2 months ago
Great product works well
SweepstakesYes

Yes, I recommend this product.

Anonymous
Texas
Reviews 2
1 out of 5 stars.

Doesn't work

4 months ago
We bought this to get rid of rodents. It doesn't work. We placed some in our laundry room and have found partially eaten bars on the floor and the rat on top of the washing machine

No, I do not recommend this product.

Get the top deals, latest trends and more
Sign up for emails from Tractor Supply today.
First Name*
Last Name*
Email*

Customer Support

  • Order Status

  • Return Policy

  • Delivery Options

  • Tax Exemptions

  • Frequently Asked Questions

  • Contact Us

  • Recall Notices

  • Call:  

    (877) 718-6750

  • Mon - Sat: 7am - 9pm CT

  • Sun: 8am - 7pm CT

  • Closed Christmas Day

About Us

  • Who We Are

  • Investor Relations

  • Stewardship

  • Community

  • Military Support

  • Product Catalog

  • Tractor Supply Stores

  • .Pharmacy Verified Website

Work With Us

  • Careers

  • Sponsorship

  • Affiliate Program

  • Potential Vendor Partners

  • Vendor Information

  • Tractor Supply Media Network

Neighbor's Club

  • About

  • Rewards

  • Hometown Heroes

  • Frequently Asked Questions

  • Terms & Conditions

Credit Center

  • TSC Credit Card

  • Klarna

Stay Connected

Connect & Share with the Tractor Supply Community.

Tractor Supply App

Shop on the go with the Tractor Supply App

Learn More

Stay Connected

Connect & Share with the Tractor Supply Community.

Tractor Supply App

Shop on the go with the Tractor Supply App

Learn More
  • Order Status

  • Return Policy

  • Delivery Options

  • Tax Exemptions

  • Frequently Asked Questions

  • Contact Us

  • Recall Notices

  • Call:  (877) 718-6750

  • Mon - Sat: 7am - 9pm CT

  • Sun: 8am - 7pm CT

  • Closed Christmas Day

  • Who We Are

  • Investor Relations

  • Stewardship

  • Community

  • Military Support

  • Product Catalog

  • Tractor Supply Stores

  • .Pharmacy Verified Website

  • Careers

  • Sponsorship

  • Affiliate Program

  • Potential Vendor Partners

  • Vendor Information

  • Tractor Supply Media Network

  • About

  • Rewards

  • Hometown Heroes

  • Frequently Asked Questions

  • Terms & Conditions

  • TSC Credit Card

  • Klarna

Connect & Share with the Tractor Supply Community.

Shop on the go with the Tractor Supply App

Learn More
  • Privacy policy
  • Your Privacy Choices
  • Terms and Conditions
  • California Transparency Act
  • Legal Notices
  • Accessibility
  • Responsible Disclosure Statement
  • Surprise (Balance) Medical Billing Disclosure
  • Transparency in Coverage
  • Human Rights Policy
  • Vendor Code of Conduct
  • California Notice of Collection
  • Privacy Requests

© 2026, Tractor Supply Co. All Rights Reserved.