What do you call a poison that specifically targets slugs and snails?

A poison that specifically targets slugs and snails is known as a molluscicide. Molluscicides are formulated to effectively control populations of these gastropods, utilizing active ingredients that disrupt their biological functions, ultimately leading to their demise. This type of pesticide is particularly valuable for managing garden pests like slugs and snails, which can cause significant damage to crops and ornamental plants.

In contrast, the other options refer to poisons designed for different categories of pests: acaricides are used against mites and ticks, rodenticides target rodents, and insecticides are aimed at insects. Each type of pesticide has a specific mode of action tailored to the biology of its target organism, which is why using a molluscicide is vital for effective management of slug and snail populations, rather than using a product meant for other pest groups.