18 LB Contrac Blox Rodent Control Rodenticide - Single Feed

Our review of the 18 LB Contrac Blox finds it best suited to property managers, farmers, and homeowners facing persistent mouse or rat problems who need a commercialgrade bait that holds up in mixed conditions. The singlefeeding anticoagulant formula with Bromadiolone delivers reliable kills with relatively few blocks needed, and the weatherable paraffin formulation helps maintain bait integrity outdoors. This is not a DIY novelty bait; it is a bulk, practical solution for serious infestations when used with tamperresistant bait stations and proper safety precautions.

Key Features

• Singlefeeding anticoagulant: Contains Bromadiolone for effective control after one feeding, reducing the number of bait encounters needed to stop activity.
• Weatherable formulation: A small amount of paraffin and foodgrade ingredients make the blocks hold up in both wet and dry conditions, extending field life.
• Highly palatable: The blend of foodgrade ingredients encourages rodents to consume bait quickly, improving knockdown speed in active infestations.
• Bulk 18 lb pail: Large commercialsize pail is useful for multibuilding properties or ongoing programs where frequent replenishment would be impractical.
• Lower secondary risk: Advertised as less toxic to nontarget animals than some singlefeeding baits, and Vitamin K1 is the known antidote, improving safety management options.

Who It's For

The Contrac Blox 18 lb pail is aimed at those managing multiple sites, farms, warehouses, or rental properties who want a robust, commercialstyle rodenticide that performs in varying outdoor conditions. Pest control professionals and experienced homeowners who use tamperresistant bait stations and follow label safety directions will get the most value.

Those who should look elsewhere include casual users with only a single small infestation who prefer prefilled stations or nonchemical control methods, and customers in jurisdictions where shipment or use is restricted, such as California, where this product cannot be shipped.

Pros & Cons

Pros

• Effective singlefeed action reduces population quickly when rodents consume the bait.
• Commercialgrade pail and formulation provide good value for ongoing programs.
• Weatherable blocks maintain integrity outdoors, decreasing waste in wet conditions.

Cons

• Bulk quantity may be excessive for small homes and requires safe storage and use of tamperresistant stations.
• Flavor is mixed among customers, so a few rodents may ignore it in some settings.

Specifications

Our Verdict

Contrac Blox in the 18 lb pail is a practical, costeffective choice for professionals and property owners who need a durable, singlefeeding rodenticide that works in wet or dry settings. When used responsibly with tamperresistant bait stations and adherence to safety guidance, it delivers strong value and fast control for ongoing infestation management.

Frequently Asked Questions

Is this safe around pets?
Contrac is described as less toxic to nontarget animals than some baits, but pets must be kept away and bait placed in tamperresistant stations; Vitamin K1 is the antidote if exposure occurs.

How long does the bait last outdoors?
The paraffin formulation helps it resist weather and remain effective in both wet and dry conditions, though customers reported mixed longevity and recommend checking every 40-60 days.

Can I ship this everywhere?
It cannot be shipped to California, so confirm local shipment and regulatory rules before ordering and always follow label instructions.