Which pest control product is useful for reducing moisture in pests' bodies?

The correct answer is a desiccant, which is specifically designed to reduce moisture levels in pests. Desiccants work by absorbing water from the environment and also from the bodies of insects and other pests, leading to dehydration and ultimately death. This method of pest control is particularly effective against pests that may have a high moisture content or rely on moisture in their environment for survival.

In contrast, miticides and acaricides are both targeted at specific groups of pests, namely mites and ticks, respectively, and their action is usually based on chemical toxicity rather than moisture reduction. Insecticides generally aim to kill insects through various modes of action, but they do not specifically reduce moisture content in pests. Therefore, while they may be effective in managing pest populations, they do not serve the primary function of desiccation, which is the critical advantage of desiccants in pest control.