Difenacoum - A Safer Poison Bait Option

Using poison baits around the home is one the most common methods of controlling rats and mice. Although extremely effective at killing rodent pests, they can also be harmful to non-target species including cats, dogs, livestock, wildlife and even people. The Big Cheese range includes baits that use the active ingredient called Difenacoum. Highly effective against both rats and mice, it’s proven to be much friendlier to non-target animals than existing baits sold in Australia.

How it Works

It works by lethal dose of active (Difenacoum) versus body weight. A person, cat or dog would need to consume a larger amount of The Big Cheese bait to have an adverse effect as opposed to most other baits sold. However with rats and mice being so small, they only need to consume small amounts to be fatal.

For example, a Rat would need to eat only a small amount of The Big Cheese Difenacoum bait to be fatal, however a dog would need to eat well over 1 kilogram of The Big Cheese Bait.

The table below shows you how much bait rodents need to eat to be fatal. Although very effective, you'll also see many can be extremely harmful to dogs. In some cases, dogs would only need to eat 5 grams of bait to be fatal.

  Grams of bait required to be fatal
Bait Ingredient in commonly sold baits
Mouse / Rat Dog
Difenacoum 0.4 / 9.0 1000
Bromadiolone 0.9 / 5.6 200
Brodifacoum 0.2 / 1.3 5
Warfarin 37.4 / 58 400

Key Characteristics

Each The Big Cheese bait has an anti-taste agent that prevents children and non-target animals from accidental consumption. Any accidental poisoning can be antidote with Vitamin K1, which is easily accessible at doctor's offices, hospitals and veterinary clinics.

Secondary Poisoning

Secondary poisoning occures when a cat or dog eats a dead or dying rodent that has consumed bait. Due to the toxicity profile of Difenacoum, The Big Cheese Baits present a lower risk of secondary poisoning when compared to some other baits.

To view The Big Cheese bait range, click here.


All poison baits can pose a poisoning risk, no matter the risk profile. We recommend the use of baits in a good quality bait station that is designed to help prevent children, pets and non-target animals from direct contact with the elements.