Contrac All-Weather Blox Rodenticide

4.5 out of 5 stars 284 Reviews | 120 Q&A

Contrac All-Weather Blox Rodenticide
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$124.98

Buy 2 or more: $118.84 each

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Average Rating

4.5 out of 5 stars Rating: 4.6

284 Reviews | 120 Q&A

Product Overview

Contrac All-weather Blox Rodenticide is a multi-edged, single-feeding Rat and Mouse bait. It is formulated with an optimal blend of food-grade ingredients and low wax to yield a highly palatable, weatherable bait that is very attractive to rodents. Secondary poisoning is very minimal with Contrac as an antidote to the poison (vitamin K1) is readily available. We recommend placing the blox in tamper-resistant mouse bait stations or rat bait stations to protect the bait from non-target animals such as dogs and cats.

Note: Due to California state restrictions, this product cannot be sold to California residents.

Features and Specs

Active Ingredient Bromadiolone 0.005%
Target pests Norway Rats, Roof Rats, House Mice, Meadow Voles
For use in Agricultural and Animal Production Facilities, Warehousing and Food Processing Plants, Commercial, Industrial, and Residential accounts
Application Anticoagulant baits are LESS toxic to non-target animals in both primary and secondary poisoning situations than other single-feeding baits
An antidote, Vitamin K1 is readily available and there is a time factor for treatment
Use in Tamper Resistant Bait Stations or areas inaccessible to non-target animals and children.
Change bait every 40-60 days if not eaten to maintain freshness and attractability.
Very cold or warm temperatures will mold or sour the bait faster
Yield Each Blox is 2 in. x 1 in. x 1 in. (28 grams)
Each 4 lb. pail contains approx. 64 blox
Each 18 lb. bucket contains about 288 bloxs
Formulation Professional Product
NOT FOR SALE TO CA
VT (Restricted To Licensed Applicators Only)
Shelf Life If unopened and sealed, product will last 2-3 years if kept away from extreme temperatures
Once opened, should last a year in normal conditions
Coverage Area All bait placements must be inside or within 50 feet of buildings.
Color Blue
Special Features Multiple edges appeal to a rodent's desire to gnaw, are made with food-grade ingredients and small amounts of paraffin for a highly palatable bait, holds up well, particularly in adverse or moist conditions, superior rodent acceptance and control including control of Warfarin-resistant rats, LESS toxic to non-target animals in both primary and secondary poisoning situations
Time to Kill Single feed, 1-5 days
Shipping Weight 19.14 lbs
Manufacturer Bell Labs (Mfg. Number: CB4047)
EPA Registration 12455-79

Details

DESCRIPTION:

Contrac All-weather Blox Rodenticide is a multi-edged, single feeding Rat and Mouse bait. It is formulated with an optimal blend of food grade ingredients and low wax to yield a highly palatable, weatherable bait that is very attractive to rodents. Contrac All-weather Blox contains Bromadiolone, which is less toxic to non-target animals in primary and secondary poisoning.

USE:

Baits are small 1 oz. size and can be placed in bait stations, in holes and burrows, or where mice and rats tend to travel. A hole in the center of each block allows it to be placed on bait securing rods in tamper resistant mouse bait stations or rat bait stations, or nail or wire it in place.

Ready-to-use CONTRAC BLOX bait pieces feature a patented multi-edge design that gives rodents plenty of gnawing edges per piece. The 1-oz. bait pieces fit easily into burrows, bait stations and tight baiting places. A hole through the center lets you wire/hang the bait, or place on bait securing rods for added security.

It is colored blue and authorized by USDA for use in federally inspected meat and poultry plants.

Do not place bait in areas where there is a possibility of contaminating food or surfaces that come in direct contact with food. Do not broadcast bait.

SELECTION OF TREATMENT AREAS:

Determine areas where rats or mice will most likely find and consume the bait. Generally, these areas are along walls, by gnawed openings, in or beside burrows, in corners and concealed places, between floors and walls, or in locations where rodents or their signs have been seen. Remove as much alternative food as possible.

Norway rats and house mice may consume a lethal dose in one feeding with first dead rodents appearing four to five days after treatment begins.

DIRECTIONS FOR USE

APPLICATION DIRECTIONS:

Each bait block in this container weighs approximately one ounce.

  • RATS: Place 3 to 16 CONTRAC BLOX (usually at intervals of 15 to 30 feet) per placement. Maintain an uninterrupted supply of fresh bait for at least 10 days or until signs of rat activity cease.
  • MICE: Place 1 block per placement. Space placements at 8- to 12- foot intervals. Two CONTRAC BLOX may be needed at points of very high mouse activity. Maintain an uninterrupted supply of fresh bait for at least 15 days or until signs of mouse activity cease.
  • RATS AND MICE: Replace contaminated or spoiled bait immediately. Collect and dispose of all dead animals and leftover bait properly. To prevent reinfestation, limit sources of rodent food, water, and harborage as much as possible. If reinfestation does occur, repeat treatment. Where a continuous source of infestation is present, establish permanent bait stations and replenish as needed.
Review Search   
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  • 5 of 5 Stars

    Mice like it. But...

    By Robert on 02/24/2009

    I live in a row-house and have an on and off again love-hate relationship with mice. They love me. I hate them. I put these Contrac Blox in my detached garage and almost every morning they are nibbled at (there is a field behind the garages). They eat it but is it true that if the bait goes stale you have to throw it out? Does it become ineffective? How long? Is there an expiration date on the pail? I would hate to buy the 18 lb size and then have to throw most of it out. Help?

    Expert ResponseExpert response:
    The fact that the bait is being eaten every day is a good sign. Mice will not die immediately after eating rodenticide baits, and will probably die somewhere out in the field on their way back to the burrow. Contrac lasts about 2 years in the bucket. When placing the bait, the manufacturer recommends that the bait be changed out every 40-60 days.

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    192 of 204 people found this review helpful

  • 5 of 5 Stars

    This stuff is the best!

    By Denis on 05/12/2010

    Verified Purchase

    Living in a restaurant filled neighborhood in DC with unkempt neighbors on both sides of our house led to our backyard becoming a rat highway. It got so bad that we would have 6 or 7 running across every 5 mins. all night - and they were getting closer and closer to the house. We looked at all kinds of new fencing options only to realize it wouldn't have made a difference since they'd probably just burrow underneath it. We bought this and in less than 1 week's time, we have abolished every rat! We only had one meet his maker in the yard that we had to dispose of, the other hundred or so wandered off to die. It's been close a month now and we still have not seen one. This stuff is BAD A@!.

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    146 of 151 people found this review helpful

  • 5 of 5 Stars

    The "TRUTH"

    By Tarik on 03/13/2010

    Verified Purchase

    This stuff is the truth. I've tried the Rex traps and other traps but those other methods just didn't get the job done. I live in a duplex with joining garages and my neighbor had dog food which attracted the rats. They were multiplying faster than I could trap them. I bought Contrac and placed them in stacks of three around my garage also stacked six of them where the garages joined. The next day the six were gone. I replaced the six with six more, they disappeared. Within five days not a sign of rats or droppings. I didn't even have to dispose of the dead rats. This is a winner!!!!!!!!!!!!!!

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    89 of 91 people found this review helpful

  • 5 of 5 Stars

    Mice are gone!

    By Tom on 08/23/2005

    We were getting rundown with field mice from the lot next to our home. Traps were not getting the job done. After 2 weeks using Contrac Blox Rodenticide the mice were gone....Thanx

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    73 of 75 people found this review helpful

  • 5 of 5 Stars

    Best I have seen

    By Harold on 11/09/2006

    This is the best I have seen. I had a bucket of Contrac Blox rodenticide sitting in the barn and the rats ate a hole in the top of the bucket.

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    62 of 67 people found this review helpful

See all 284 customer reviews

Questions & Answers

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Q
Will Contrac attract rats from the neighbourhood?

How attracted rats are to the Contrac Blox? A pest control guy suggested that it wouldn't be a good idea to preventatively use baiting station with Contac. He said that it may attract rats that otherwise wouldn't be around the house. Is this right? Would it really attract rats from, say, 10-20 yards away? Thanks.

A
Yes, the mice and rodents in the area will be attracted to the Contrac Blox as they are made of a variety of very attractive food based ingredients for the rodents to want to feed on. Any rodents looking for a food source would want to go to the bait in the stations.

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48 of 54 people found this answer helpful

Q
Does Contrac Blox Attract Mice?

Mice got inside our heat pump outside and did some damage. If I place a bait stations around the heat pump, will the Contrac Blox odor attract mice to the bait station and the heat pump? Thanks.

A
Yes, the mice and rodents in the area will be attracted to the Contrac Blox as they are made of a variety of very attractive food based ingredients for the rodents to want to feed on. Any rodents looking for a food source would want to go to the bait in the stations. Please let us know if you have any other questions.

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3 of 3 people found this answer helpful

Q
Will Contrac bait attract and kill moles?
A

We do not advise using Contrac Blox Rodenticide to treat for moles as it is not labeled to used for that treatment. Moles' primary food source is actually earthworms, and they stay underground to feed, so it is unlikely they would even consume a bait such as Contrac. Please refer to our guide on How to get rid of Moles to help further asisst you. 

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1 of 1 people found this answer helpful

Q
Will Contrac All-Weather Blox Rodenticide attract squirrels?
A

Contrac Blox Rodenticide should be applied in tamper-resistant stations to prevent non-target animals and children from accessing the bait inside. Although this product is only labeled for rats and mice, it is possible that a squirrel could be attracted to the bait matrix for consumption since squirrels are in the same family as rats/mice. 

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3 of 5 people found this answer helpful

Q
Should I use peanut butter with Contrac Blox Rodenticide?
A
You do not have to us peanut butter with Contrac Blox. Contrac Blox contains its own food scents that attract rats and mice.

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4 of 4 people found this answer helpful

Q
Will Contrac All Weather Blox attract flying squirrels to come into the attic?

Two mouse bait plastic stations containing Contrac All Weather Blox were placed in the attic. The stations were chewed by Flying Squirrels apparently to get to the Contrac All Weather Blox. Is attic use of this product advisable, acceptable, or recommended? Is attic use improper? This apparently caused a flying squirrel infestation.

A

Since squirrels are in the same family as rats/mice, it is possible the bait matrix in the Contrac All-Weather Blox Rodenticide could be attractive to flying squirrels also. While rodenticides can be used indoors for rodent control, we typically do not recommend baiting for rodents indoors as the bait can draw insects and can also keep drawing the rodents into the home. We would recommend using the Contrac Blox in the tamper resistant bait stations outside the home around the structure. Inside the home, you can use Detour Rodent Repellent to make the attic less appealing to rodents and squirrels and use Rodent Snap Traps or Glue Boards to catch unwanted guests in your attic.  

If you know where the squirrels are entering you can use an Tomahawk One Way Door Excluder where they are entering the attic. This will allow the squirrells to exit through the hole, but not get back in. Exclusion Methods with Copper Mesh or Xcluder Wire are great ways to seal up holes to keep mice, rats and squirrels out.

 

 

 

 

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Q
Are chipmunks attracted to Contrac Blox Rodenticide?

Already using traps for chipmunks but need more in the arsenal.

A

We cannot recommend that you use Contrac Blox Rodenticide or any other baits for chipmunk control since these products are not registered for that use. There are food attractants in any rodenticide that may be attractive to non-target animals, which is part of the reason these baits should be used in tamper-resistant stations. We can only recommend trapping and repellents for chipmunk control. You may want to contact your local Wildlife/Animal Control Department for any other available options in your area.

Chipmunk Control 

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0 of 2 people found this answer helpful

Q
How does the Contrac Blox mouse bait work?
A
Contrac Blox contains food ingredients that attract rodents. The rodents then consume the bait. When they receive a lethal amount of bait, they will then expire. Rodent baits should be used in tamper resistant bait stations to avoid accidental contact with children and non-target animals.

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2 of 10 people found this answer helpful

Q
Does Contrac contain glass?
A
Contrac does not contain glass. It contains food based ingredients that attract the rodents to the bait for consumption. It is an anti-coagulant which means once the mice eat this product they begin to bleed to death from the inside.  The mice first become sick, and then grow tired and weak and pass in their sleep.  It can take anywhere from a few hours to a few days depending on how much the mice have eaten.  They do not need water for the product to work.

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0 of 1 people found this answer helpful

Q
I suspect that my bait station with Contrac is attracting racoons; will the Contrac kill a racoon?

Bait stations are placed in the yard to deal with rats. Bait stations will be found 3 to 4 feet from where they were placed and bait is gone. I do not want to attract racoons or other critters. Should a different bait be considered or should I not bait the traps for some period of time?

A
The Contrac can kill a raccoon if it ate enough, but it would have to eat a large amount.  It doesn't sound like your stations are secure at all to the ground or to some other structure.  You can use liquid nails and affix the station on a 1 x 1 foot paver you can buy from home depot.  This well prevent them from being moved.  Also, if you make sure the bait is secured on the rods, and the station is secure, it should prevent the raccoons from being able to work the bait free from the rods.

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2 of 4 people found this answer helpful

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Contrac All-Weather Blox Rodenticide 4.5 out of 5 stars Rating: 4.6 (284 Reviews / 120 Q&A)

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