Is Contrac All-Weather Blox Rodenticide Safe for Use Around Dogs?

Contrac All-Weather Blox by Bell Laboratories is highly toxic to dogs if eaten. While this rodenticide is designed to kill rats and mice, it contains a chemical called bromadiolone, which is just as poisonous to pets like dogs. If a dog eats even a small amount, it can cause serious health problems, including severe internal bleeding, organ damage, or even death. The poison also remains dangerous for days after being placed and can hurt your dog if it licks, chews, or swallows any of the bait.

Even if you use bait boxes, determined dogs may still find ways to get to the bait. In addition, a dog could be harmed by eating a poisoned rodent. There is no completely safe way to use Contrac All-Weather Blox anywhere dogs may have access—not just indoors, but also outdoors, garages, yards, or sheds. If you have pet dogs, it’s best to completely avoid using this product and choose non-toxic methods for rodent control instead. If your dog is exposed to this rodenticide, contact a veterinarian immediately.

Using Contrac All-Weather Blox Rodenticide Safely Around Cats

Contrac All-Weather Blox is a professional-grade rodent poison containing bromadiolone—a chemical extremely dangerous to cats. It’s not safe to use this product anywhere your cat could even accidentally reach the bait or a poisoned rodent. Even small amounts can cause serious illness or death in cats. Cats can be poisoned by directly eating the bait or—more commonly—by catching and eating a mouse or rat that has consumed the poison (this is called secondary poisoning).

Cats are curious and may nibble or paw at the bait, especially if it’s dropped, moves, or smells interesting. The poison blocks are designed to be attractive to rodents, but they don’t repel pets. There’s no safe way to use Contrac in or around an area where a cat lives or roams unless you can absolutely guarantee they cannot access the bait or the rodents that have eaten it—which is almost never possible in a home setting.

If your cat ingests or chews bait, or eats a poisoned rodent, call your vet immediately; this is an emergency. For households with cats, it’s safest to avoid using Contrac or similar rodenticides entirely and consider non-toxic alternatives, like snap traps enclosed in cat-proof boxes.

Is Contrac All-Weather Blox Rodenticide Safe for Small Pets Like Hamsters and Guinea Pigs?

Contrac All-Weather Blox by Bell Laboratories is a highly toxic rodenticide, specifically made to kill rats and mice. It is extremely dangerous for small pets such as hamsters, guinea pigs, gerbils, and similar animals. Even tiny amounts can be deadly. There is no way to use this product safely around these pets. They are just as easily harmed by the chemical as the target rodents—it works by causing internal bleeding if eaten, and small pets are very sensitive because of their size and biology.

Small animals can be poisoned by direct contact with the bait, eating contaminated food or bedding, or even from another animal that was poisoned. Sometimes, pets escape their cages, or bait crumbs get tracked into areas they can access. “Pet-resistant” bait stations do NOT guarantee safety for tiny animals; these stations are designed mainly for large pets like cats and dogs, not for pets as small as hamsters or guinea pigs.

If you have small pets in your home, do not use Contrac All-Weather Blox anywhere indoors or outdoors where they could possibly be exposed. Consider only pet-safe, non-toxic pest control alternatives and always consult your veterinarian before using any rodent control near your pets.