What type of pesticide is specifically formulated for targeting worms and caterpillars?

The correct choice is insecticides because they are the category of pesticides designed specifically to control insects and related organisms, including worms and caterpillars. These pests can cause significant damage to crops and plants by feeding on their foliage, making them a target for insecticides that contain active ingredients effective against those particular life stages of insects.

Insecticides may include formulations that are specifically targeted for certain types of pests, such as those in the larval stage, which encompasses worms and caterpillars. These pesticides work by disrupting the insect's nervous system or other biological processes, leading to their control or elimination.

Herbicides, on the other hand, are formulated to kill or inhibit the growth of unwanted plants (weeds) rather than insects. Rodenticides are specifically aimed at controlling rodent populations, while acaricides target mites and ticks. Each type of pesticide serves a distinct purpose, which is why insecticides are the correct answer for targeting worms and caterpillars.