Which type of formulation is typically solid and used for quick pest control?

The correct formulation for quick pest control, typically in solid form, is dust. Dust formulations are designed to adhere to surfaces and can provide immediate impact on pests upon contact. They are often used in environments where the pest is active, allowing for rapid action to eliminate them quickly. Dusts can penetrate into cracks and crevices effectively, where many pests hide, making them particularly useful for controlling a variety of insects.

Granules, on the other hand, are usually larger particles that may take longer to dissolve and act, as they often require moisture to start working. While they can be effective for certain applications, they may not provide the immediate effect associated with dust formulations. Pellets are a similar solid formulation, often used for specific types of baiting, but they also do not typically have the quick-response characteristic that dusts provide. Liquid formulations, while effective for many applications, are not solid and therefore do not fit the criteria described in the question.