Which type of formulation is specifically used in structures for treating cockroaches in cracks and crevices?

Dust formulations are particularly effective for treating cockroaches in cracks and crevices due to their ability to penetrate and settle into narrow spaces where these pests often hide. The fine particles in dust can easily reach these areas and provide prolonged effectiveness, as they adhere to the surfaces and can be picked up by the cockroaches as they move through treated environments.

In contrast, other formulations like aerosols may not penetrate as deeply into the cracks, while emulsifiable concentrates typically require a liquid application method that may not be suitable for such small crevices. Granules, while effective in some settings, are generally used for surface applications or in outdoor environments, making them less effective in indoor cracks and crevices specifically targeted for cockroach control. Dust formulation thus stands out as the go-to choice for precise and effective pest management in tight spaces.