Rodenticides are pesticides that are used to kill rodents, such as rats and mice. They can be found in a variety of forms, including baits, traps, and poisons. Rodenticides work by interfering with the rodent’s nervous system, causing seizures and death. They can be very effective in controlling rodent populations, but they can also be dangerous to humans and other animals if they are not used properly.
Option A is incorrect because rodenticides do not kill fishes. Fishes are aquatic animals, and rodenticides are designed to kill terrestrial animals, such as rats and mice.
Option B is incorrect because rodenticides do not kill insects. Insects are small invertebrates, and rodenticides are designed to kill larger animals, such as rats and mice.
Option C is correct because rodenticides are designed to kill rats and mice. Rats and mice are rodents, and rodenticides are effective in killing them.
Option D is incorrect because rodenticides do not kill crocodiles. Crocodiles are reptiles, and rodenticides are designed to kill mammals, such as rats and mice.