True or false: High pressure must be maintained in handheld sprayers to be effective.

Handheld sprayers do not require high pressure to be effective, making the statement false. The effectiveness of a sprayer is influenced by several factors, including the type of nozzle used, the viscosity of the solution being sprayed, and the target pest or area to be treated.

Lower pressure settings can often provide adequate coverage, especially for applications that require more precision, such as targeting specific areas or minimizing drift. Additionally, high pressure can sometimes lead to overspray or unwanted dispersion of the pesticide, making it less effective for the intended application. Therefore, maintaining high pressure is not a necessary condition for achieving effective pest control with handheld sprayers.