Strategies of effective fighting require products filling various requirements. Except mechanic traps and toxic gases, rodenticides are the most common means of fighting. They are distinguished in two types: called acute toxicity and chronic toxicity including mainly the anticoagulants.

Acid poisons, as for example the phosphoric zinc that acts relatively fast after its reception from the animal and these are dieing in few minutes or hours. These types of rodenticides are usually used for fighting of populations of mice. The anticoagulants (substances that suspend the coagulation of blood) are the wider used chemical means for the fighting of mice and rats.

The consumption of these substances causes internal bleedings, thus animals initially weakening and at the end they die in few days without pains. This gradually "physiologic" death does not create, in the remainder population of rodents, suspicions for the bait.