Which substance is typically used for applying pest control in cracks and crevices?

Applying pest control in cracks and crevices often involves using a substance that can effectively penetrate these areas. Liquid sprays are particularly suitable for this purpose because they can reach into small spaces and coat surfaces thoroughly, allowing them to be effective against insects hiding in tight areas. Liquid formulations can also adhere to surfaces longer, providing extended protection.

In contrast, while solids and powders can be used in some situations, they may not penetrate as deeply into narrow gaps compared to liquids. Granules are typically used for broader applications, such as treating soil or larger areas, rather than specifically targeting cracks and crevices. Gas treatments can provide coverage in enclosed spaces but are less common for routine pest control and involve specific safety precautions.

Thus, the use of liquid sprays is favored for treating pest issues in cracks and crevices due to their ability to effectively reach and adhere to those challenging areas.