Which chemical formulation is most commonly used for vertebrate poisons?

Baits are the most commonly used chemical formulation for vertebrate poisons primarily because they are specifically designed to attract the target animals, making them an effective delivery system for the poison. This formulation typically combines the toxicant with an appealing substance that serves as bait, which can appeal to a wide range of vertebrates, including rodents and larger mammals.

The attraction of baits can significantly increase the likelihood of ingestion by the target species, ensuring that the poison is consumed. This formulation is particularly effective in controlling populations of pests and ensuring that the chemical reaches the intended vertebrate targets.

Other formulations like wettable powders, emulsifiable concentrates, and dusts may also be utilized in pest control but are more effective for insects or in other specific applications rather than targeting vertebrates directly. Each of these other formulations has its own uses, such as dusts for treating surfaces or wettable powders for creating solutions, but none match the targeted effectiveness of baits when addressing vertebrate pest issues.