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Contrac Blox Rat Mouse Poison Bait

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Contrac Blox is a rodenticide containing bromadiolone and is a single feed bait that kills both rats and mice indoors and outdoors. It is recommended to be used in a bait stations and provides kill within one to two days.

Target Pests

Contrac Blox All Weather bait kills Cotton Rats Deer Mice House Mouse Norway Rat Roof Rat Black Rat Brown Rat Pocket Mouse Kangaroo Rat Harvest Mouse Jumping Mouse and more.

For Use In

Contrac Blox All Weather Bait can be used indoors or outdoors. Common places to use Eaton rat and mouse bait include agricultural buildings residential homes garages attics yards commercial food service facilities food manufacturing plants food processing establishments dumpsters sheds cabins deer leases.


Place Contrac Blox All Weather Bait in locations out of reach of children, pets, and non target animals. In some situations a tamper resistant or tamper-proof bait station such as the Aegis RP Rat Bait Station may be required.

For rats: Apply 2 to 8 blocks (4 to 16oz) of Contrac Blox All Weather Bait per placement. Rait baiting placement varies by location. Generally placements are 15 to 20 feet apart as rats will travel quite some distance in search of food. You must maintain a constant supply of bait for 10 days for best results.

For Mice: Break Contrac Blox All Weather Bait Blocks into 3 pieces and place 1 to 2 small blocks at 10 foot intervals around the infested area. You must maintain a constant supply of bait for at least 15 days for best results.

Replace consumed or spoiled bait immediately to keep a constant supply.

To prevent re-infestation you must limit alternate food sources and seal entry points.

Coverage Area

Contrac Blox All Weather Bait Blocks will treat between 150 and 300 linear feet depending on infestation and rodent type.

It is best to identify the infestation source and concentrate placements near entry ways to the rodent's nest.

Remember to maintain a constant supply of bait for 10 to 15 days depending on rodent.

Time to Kill

Contrac Blox All Weather Bait takes 2 to 4 days to kill rats and mice after they eat it. Bromadiolone is a slow acting poison that will not create bait shyness.

Active Ingredient

Bromadiolone .005%

Contrac Blox Rat Mouse Poison Bait

Contrac Blox

CONTRAC BLOX is a single-feeding anticoagulant rodenticide containing the active ingredient, Bromadiolone. Unsurpassed in rodent acceptance and control, CONTRAC BLOX is an excellent clean-out and maintenance bait to control mice and rats, including warfarin-resistant Norway rats.

CONTRAC BLOX is specially formulated with an optimal blend of food-grade ingredients and a small amount of paraffin. The result is a highly palatable, yet weatherable, bait that works well in wet and dry conditions.

Bait acceptance with CONTRAC is superior due to its highly palatable formulation. Plus, manufactured with Bell's extrusion process, the 28g bait piece has multiple edges that appeal to a rodent's desire to gnaw. Rodents can consume a lethal dose in just one feeding. Bait shyness is not a problem with CONTRAC because mortality occurs a few days after bait is consumed.

CONTRAC is also less toxic to non-target animals, in both primary and secondary poisoning situations, than other single-feeding anticoagulants. The antidote, Vitamin K1, is readily available and there is a time factor for treatment.

For ease of use, a hole in the center of the BLOX lets technicians nail or wire the BLOX to rafters and ceilings or place it on bait securing rods in tamper-resistant bait stations for added security



Protecta Evo Ambush Bait Station - Protect pets and children by placing rodenticides in this bait station!

Provoke Mouse And Rat Attractant


Make sure you stay protected when handling chemicals with the help of our homeowner safety kit.


Product Q & A

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Browse 12 questions Browse 12 questions and 27 answers
Do u ship to California?
Eman G on Oct 30, 2017
BEST ANSWER: We cannot ship this to CA
How long does it take to get rid of rats with this bait?
A shopper on Feb 16, 2018
BEST ANSWER: I use this for mice. It has kept a good control of them in the barn which has many entrances. I use this because the local pest control recommended this product. It’s what they use everyday. Sorry I can’t give you a review with rats. But by all means give it a shot. What do you have to lose.
if a wild animal (owl, fox, hawk) eats a mouse that has eaten this poison, is that harmful?
A shopper on Jun 19, 2018
BEST ANSWER: Yes, there is a chance of secondary poison when you use Contrac Rat and Mouse Bait.

We always recommend that you follow label and also attempt to located and remove any dead rodents in the area.

There are other products such as Kaput that have a reduced risk.

Can I handle it without gloves?
A shopper on May 6, 2018
BEST ANSWER: You will want to wear gloves when you are loading your bait stations or putting the Contrac Bait out.

It is to keep you safe and also to not leave any smells on the bait that might cause them to be alarmed and not ingest the bait.
If the rat eats the poison and my dog eats the poison rat will it poison my dog?
Kim J on Dec 11, 2017
BEST ANSWER: Lethal dose depends on size of animal, etc. You would not want your pet to gain access to the rodent bait, this is why we recommend the use of bait stations.

I have used a rat poison that when they die there is no odor. Does your product do this?
Rody M on Sep 22, 2017
BEST ANSWER: No, Contrac Rat and Mouse bait will kill them and there will be decomposing smells. I know of no bait that will stop the smell.

You can purchase rat sorb, earthcare bags, etc to minimize the orders.


Can a bird, cat, etc. that eats a rat or mouse have secondary contamination or be effected by the poisen? Below you did not answer that. I know if an animal eats it directly it can.
A shopper on Jan 9, 2018
BEST ANSWER: Yes, there is a risk of secondary poisoning with Contrac, we would always recommend picking up any dead rodents that you may locate. In most cases it would be rare for cats, because they are predators and would not be interested in the dead rat or mouse.

Other products such as Kaput, have reduce risk of secondary poisoning, rodent still dead in the end.

How long does a closed container stay potent?
I only use one 4# pail in 2 years?
Me on Jul 24, 2017
BEST ANSWER: You can store the Contrac for up to 3 years, if kept air tight, the main problem is grain insects that will break down the blox.
How harmful is this in a 7 pound puppy? I caught her chewing on it and not sure how much she had ate or if she had ate any. I found little pieces on her gums and teeth.
A shopper on Dec 13, 2017
BEST ANSWER: It is best to call the poison control number on the container, they have staff that can give you the exact amount per lbs. You can also make the animal vomit with peroxide if you catch them right away. Calling the vet for Vitamin K would be the next logical action as an antidote if you are not sure about how much the animal consumed.
What is the main ingredient in your product?
A shopper on Oct 23, 2017
BEST ANSWER: This is the active ingredient in the Contrac Bloxs Bromadiolone .005%
How many bait blocks come in each size container?
JumpinJoe on Jun 20, 2017
BEST ANSWER: Contrac has approximately 288 bloxs in an 18lb pail. The 4lb pail of control will have 64 bloxs.
Is there an antidote for domestic animals?
zedo13@cox.net on Nov 26, 2016
BEST ANSWER: Vitamin K would be the Antidote for domestic animals, should always contact your vet and Bell labs poison control number on label if accidental poisoning occurs.

We would always recommend this be kept out of the reach of pets and use in a tamper-proof bait station, such as the EZ Klean Bait Station. https://www.solutionsstores.com/ez-klean-bait-stations-secured

Customer Reviews

4.0 / 5.0
3 Reviews
5 Stars
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Easy to Use
5.0 / 5
5.0 / 5
5.0 / 5
Safe to Use
5.0 / 5
Would you Recommend?
Yes (1)
No (1)
Would you Recommend?
well it hasnt worked yet. nothing has touched it and we have other things too as told. the plug in repellants, glue sticks bait stations and snap traps and nothing.also we dont see any sign of any rodents. pest guy saw none either but there is something in our wall..
July 13, 2018
3 weeks ago
Easy to Use
5 / 5
5 / 5
5 / 5
Safe to Use
5 / 5
Would you Recommend?
Best rat killer!!!!
Highly recommended!!!
Super effective product, rats loved.
Can be used outdoors. It's our pest control barrier for 1.5 acres property. Thanks!
December 26, 2017
7 months ago
It works great. The rats love it and they are dropping like flies.
October 6, 2017
10 months ago

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