What type of treatment involves application to limited surfaces where insects are likely to occur?

Spot treatment refers to the targeted application of pest control substances to specific areas where insects are likely to be found. This method is particularly effective for dealing with localized infestations, as it allows pest control professionals to focus their efforts precisely where it is needed without treating unnecessary areas.

The nature of spot treatments is to minimize pesticide use while maximizing effectiveness, making it an environmentally friendly choice in pest management. It is also beneficial for controlling specific pest populations and reducing the potential for resistance, as it limits exposure to the entire area and focuses solely on high-risk areas.

In contrast, other methods may involve broader applications that are not as targeted. For example, crack treatment targets specific gaps and openings where pests might enter, surface treatment applies to larger areas or surfaces, and residual treatment involves applying products that remain effective for a prolonged period after drying. Thus, while they are all valid methods of pest control, spot treatment is uniquely concerned with limited surfaces where insects are most present.