What type of spray stream would be used in a crack and crevice treatment?

In crack and crevice treatments, the solid pin stream is the most effective choice because it allows for a targeted application of the pesticide directly into narrow spaces where pests are likely to hide or travel. This type of stream provides minimal dispersion, ensuring that the chemical is delivered precisely to the intended area without excessive overspray.

The concentrated nature of the solid pin stream allows technicians to effectively manage high-pressure applications, which can help penetrate deeper into cracks and crevices, maximizing the treatment's effectiveness against pests that may be hidden. This is especially important in areas where residue buildup could cause a risk of exposure to non-target organisms or where the precision of application is critical to the success of pest control efforts.

In contrast, other spray types, such as a fan or cone stream, would disperse the liquid over a wider area, potentially leading to less effective treatment in those narrow spaces and increasing the risk of impacting non-target areas or organisms.