What type of pesticide can immediately eliminate pests inside a structure?

The type of pesticide that can immediately eliminate pests inside a structure is a fumigant. Fumigants work by producing gas that penetrates all areas of a space, allowing them to reach pests hiding in cracks, crevices, and other hard-to-reach locations. This method is particularly effective for eliminating a wide range of pests, including insects and rodents, as it can provide thorough extermination across an entire area.

Fumigation is often used in situations where immediate results are necessary, such as in residential structures that have severe infestations. The ability of fumigants to disperse evenly makes them superior for immediate pest control.

In contrast, desiccants work by absorbing moisture from pests, leading to their dehydration over time, which means they do not provide immediate elimination. Growth regulators interrupt the life cycle of the pests but do not kill them outright, and foams are typically more localized treatments that do not have the widespread efficacy of fumigants.