How long does Contrac Blox take to work?

Contrac Blox typically takes 2–4 days to kill rodents after they have consumed a lethal dose. The exact time may vary depending on the size and species of the rodent, as well as how much bait they consume within a given timeframe.

Why is bromadiolone banned?

Bromadiolone, a second-generation anticoagulant, has been restricted or banned in certain areas due to concerns about its impact on wildlife and secondary poisoning of non-target animals, such as predators and scavengers that may consume poisoned rodents. Regulations vary by country or region, and in some cases, professional use of bromadiolone is still permitted.

Does Contrac Blox attract mice?

Yes, Contrac Blox is designed to attract both mice and rats. Its peanut butter-like scent and flavor make it appealing to rodents, encouraging consumption for effective control.

Is Contrac Blox the strongest rodent bait?

Contrac Blox is considered highly effective, but whether it is the 'strongest' depends on your specific needs. It contains bromadiolone, a potent second-generation anticoagulant that is effective against rodents in a single feed. However, other rodent baits with different active ingredients or formulations may be stronger in certain scenarios.

Can Contrac Blox be used outdoors or only indoors?

Contrac Blox can be used both indoors and outdoors. When used outdoors, it should be secured inside tamper-resistant bait stations to prevent access by non-target animals, children, or pets. Always follow label instructions for safe application.

How should Contrac Blox be applied around the home?

Contrac Blox should be placed where rodents travel or are likely to feed, such as along walls, in corners, or near burrowing activity. When used indoors, place the blox in strategic locations like basements, attics, or garages. Outdoor application requires the use of tamper-resistant bait stations to ensure controlled exposure.

Is Contrac Blox safe to use around pets or children?

Contrac Blox contains bromadiolone, which is toxic to pets and children if ingested. Precautions must be taken by using tamper-resistant bait stations to minimize any risk of accidental exposure. Store unused bait in sealed containers and always follow safety guidelines on the product label.

Contrac Blox Rodent Bait

Rating: 95 % of 100

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SKU

contracbloxgroup

Starting at $109.80

Grouped product items
Product Name	Price/Ea.	Quantity
Contrac Blox - 18 lbs. Buy 2 for $107.50 each and save 2%	$109.80
Contrac Blox with Lumitrack - 18 lbs	$117.99
Contrac Blox Rodent Bait - 4 x 4 lb Buy 2 for $123.47 each and save 0%	Special Price $123.62 Regular Price $128.09
Contrac Blox City Pack (16-1 lb bags) Buy 2 for $143.53 each and save 3%	$148.67
Ambush Bait Stations (6) + Contrac Blox (18lbs.)	$186.49
Total:		$0.00

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This product is restricted for sale to the following states: CA, CT, SC.

If you are shipping to one of these states, please see our alternative product option:

TakeDown II Mini Blocks

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Grouped product items
Product Name	Qty
Contrac Blox - 18 lbs. $109.80
Buy 2 for $107.50 each and save 2%
Contrac Blox with Lumitrack - 18 lbs $117.99
Contrac Blox Rodent Bait - 4 x 4 lb Special Price $123.62 Regular Price $128.09
Buy 2 for $123.47 each and save 0%
Contrac Blox City Pack (16-1 lb bags) $148.67
Buy 2 for $143.53 each and save 3%
Ambush Bait Stations (6) + Contrac Blox (18lbs.) $186.49

Protecta Evo Ambush Bait Stations (4 stations + 1 Key) $73.49
Trapper Max Mouse Glue Boards (Scented) (72 Boards per case) $37.87
Trapper T Rex Rat Snap Traps (4 Pack) $29.94

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⚠️ WARNING: NOT FOR SALE IN CALIFORNIA, CONNECTICUT & SOUTH CAROLINA ⚠️

In compliance with state regulations, this product cannot be shipped to CA, CT and SC. Please check local regulations before purchasing. For alternative options, consider TakeDown Soft Bait or other single-feed baits and non-anticoagulants.

Product Information

Contrac Blox

Contrac Blox with bromadiolone is a professional-grade, single-feed rodent bait.

Known for exceptional palatability and reliability, it provides quick, effective control of rats and mice in residential, commercial, and industrial settings.

Key Benefits

Single-feed anticoagulant kills rodents after one feeding.
High bait acceptance, even against competing food sources.
Effective for both clean-out and maintenance programs.
Controls warfarin-resistant Norway rats.

Weather-Resistant Design

Formulated with food-grade ingredients and a paraffin coating.
Performs in both wet and dry conditions.
Durable block form with multiple gnawing edges reduces bait shyness.

Application Guidelines

Place Contrac Blox in tamper-resistant bait stations to protect bait from pets, wildlife, and the elements.
Rats: Use 3–16 blocks per placement, spaced 15–30 feet apart. Replenish until activity ceases.
Mice: Place 1 block every 8–12 feet. Increase to 2 blocks in areas of high activity.
Maintain a fresh supply of bait for consistent results.
Dispose of dead rodents and unused bait promptly and responsibly.
Reduce future infestations by eliminating food, water, and shelter sources.

Safety Recommendations

Always use bait inside tamper-resistant stations to protect non-target animals and ensure compliance with local regulations.
Stations secure the bait and improve effectiveness by shielding it from weather.
Contrac Blox has lower toxicity to non-target species, and Vitamin K1 is the antidote in case of accidental exposure.
Take precautions to minimize risk to children, pets, and wildlife.

Contrac Blox is the trusted choice of professionals for effective, reliable, and easy-to-use rodent control in residential, commercial, and agricultural settings.

Contrac Blox - High Bait Acceptance With Rodent Control

Contrac Blox with bromadiolone has one of the highest bait acceptance of all our professional rodent baits. Bromadiolone is a single feed bait, that causes death after one feeding.

Contrac Blox is the most palatable bait block on the market providing high bait acceptance. Contrac Blox is made from a blend of food-grade ingredients with a paraffin coating. This process results in an all-weather bait that is highly palatable.

It works in both dry and wet conditions. As one of the top products used by professionals, it has unsurpassed in rodent acceptance and control. Contrac Blox is popular as both a clean-out and maintenance rodent bait, working even against warfarin-resistant Norway rats.

Extrusion Process & Bait Shyness

Manufactured with Bell's extrusion process, Contrac Blox 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 Rodenticide because mortality occurs a few days after bait is consumed.

Contrac Blox Features

Available in 4 X 4 lbs and 18 lb pails
Enough bait blox to kill hundreds of rats and mice
Each block has a hole in it to anchor into a bait station
Kills rats and mice in a single feeding
Contrac is also less toxic to non-target animals in 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.
Tamper-proof bait Stations are recommended to protect the bait from non-target animals such as dogs and cats.
May be used inside or outside, within 100 feet of man-made structures.

Packaging

Contrac Bloxes are 1-ounce blocks with a center hole. Contrac Blox is colored blue for easy recognition as a non-food item.
Contrac Blox 18 lbs yields about 288 x 1 oz blocks
EPA passed new rodenticide regulations in June 2011. Contrac Blox can only be sold in 16 lbs or more.
As an alternate choice, Fastrac Blox and Terad3 Blox are not affected by the new regulations and can be purchased in 4 lb containers.

Specifications
Packaging	4 x 4 lb, 18 lb, 16-1 lb bags, Contrac 18 lbs and Ambush Bait Station Kit
Product Label	Contrac Blox Label
Safety Data Sheet	Contrac Blox SDS
Target Pest	Rodents
Active Ingredient(s)	Bromadiolone .005%
For Use In	Contrac Blox is designed for use within 100 feet of man-made structures, making it ideal for agricultural facilities, warehouses, food processing plants, and residential or commercial accounts. Rats: Use 3-16 blocks spaced 15–30 feet apart. Continue replenishing fresh bait for at least 10 days or until activity stops. Mice: Place 1 block every 8–12 feet, using 2 blocks in areas with high activity. Maintain fresh bait for at least 15 days or until activity ceases. Replace contaminated bait immediately, and properly dispose of dead rodents and leftover bait. To maximize effectiveness, remove sources of water, food, and shelter. For ongoing infestations, use tamper-resistant stations supplied with Contrac Blox. Restrictions: Must be used within 100 feet of structures. Fence and perimeter baiting beyond 100 feet is prohibited. Do not apply directly to food/feed crops or use for burrow baiting.
Yield	16lb approx 256 1oz blocks, 18lb approx 288 1oz blocks
Retreatment	Repeat treatments as needed when pest activity is detected.
Not Available for Purchase In	CA, CT & SC
More Instructions	CONTRAC BLOX can be easily placed in tight spaces, nailed to rafters or ceilings, or used with Bell's tamper-resistant bait stations.
Mfg Part	CB4047