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Keith's Pro Tips

"When using a slow-acting bait like Chlorphacinone, you should monitor your baited area regularly. Often, odents die in areas where they may not be accessed or are hard to reach and will start to decompose which will be unpleasant for all due to the odor."


In earlier years. rodent poisons contained Warfarin, an anticoagulant designed to prevent the clotting of blood for rats and mice, eventually leading to death via internal bleeding. For a while it was an effective active ingredient, that is, until rats and mice started to develop a resistance against such rodenticides.

It was then that rodenticide manufacturers went back to the drawing board and developed what are called “second-generation anticoagulants” to speed up the killing process and lessen rodent resistance. One such rodenticide active ingredient which has shown success in eliminating rodents is Chlorophacinone.

Solutions Pest & Lawn is proud to carry products containing this powerful active ingredient. On this page, you can learn more about chlorophacinone and why it works so effectively to kill even the toughest rodent infestations as well as shop the product we have in our inventory.

What is Chlorphacinone?

Chlorophacinone is a multiple-feed anticoagulant rodenticide. This means that they generally require that an animal eat multiple doses of the bait over several days for death to occur. It is known as a superwarfarin and was developed to improve upon the Warfarin formula, making it more effective.

How Does Chlorphacinone Work?

Mode of Action

Chlorophacinone is a second-generation anticoagulant that has a mode of action that prevents the clotting of blood by decreasing Vitamin K levels in the blood. Once an infected rodent runs out of vitamin K they ultimately die by bleeding to death internally.

Benefits of Chlorphacinone

Chlorphacinone is an improvement upon Wayfarin as it is a much more potent product and has a stronger initial effect on feeding rats and mice. It's formula does not induce bait-shyness and remains stable and weather resistant.

Drawbacks of Chlorphacinone

Though it is more potent than Warfarin, Chlorophacinone requires a prolonged feeding period to work, which means that control of problem rodents is slow and will require a lot of patience.

Is Chlorphacinone Safe?

Chlorphacinone is safe when applied according to label directions. It is best to put the active ingredient in bait stations to reduce the chances of pets or children getting ahold of or tasting the bait.

Gloves should be worn during the application, make sure to wash hands after handling the bait and avoid all contact with the mouth. Vitamin K1 works as an antidote for accidental ingestion, and prolonged treatment is required because it has a long half-life (up to several months).

What To Expect

Chlorphacinone bait

Since Chlorphacinone is a multi-feed anticoagulant, rodents will need to feed on the bait multiple times until they receive a lethal dosage. After feeding on enough rodenticide, death can occur between 3 to 10 days after feeding has begun.

Be patient and persistent with your baiting of this active ingredient and monitor your bait placements to see if they are being eaten consistently.

Featured Products

Rozol Tracking Powder - Rozol Tracking Powder is used to control rats and mice. The powder is applied in areas where the targeted rodents walk, causing them to ingest it when they groom themselves. It can be easily applied in between walls and other hard to reach areas.

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