What is a key characteristic of the carbamate class of pesticides?

The carbamate class of pesticides is primarily characterized by being contact poisons. This means they work by directly affecting the nervous system of pests when they come into contact with the substance on surfaces or from direct application. Carbamates inhibit an enzyme called acetylcholinesterase, which is crucial for normal nerve function, leading to a buildup of acetylcholine and subsequent paralysis or death of the target pest.

In the context of pest control, while some pesticides may focus on specific types of pests or have different modes of action, carbamates are especially notable for their ability to act quickly upon contact, making them effective for various applications in pest management.