Understanding the effects of various chemicals on predatory mites is important for successful pest control. 

In Israel, we often witness outbreaks of T. urticae during the hot season, indicating a failure of the predator P. persimilis in controlling the pest. 

High temperatures combined with applications of various chemicals such as pesticides, fungicides, growth regulators, and surfactants may cause lethal and sublethal effects on these predatory mites, including reduced survival, predation, and fecundity, thereby decreasing their effectiveness. 

However, the information on the compatibility of many of these commonly used chemicals under different exposure applications and at higher temperatures remains limited, as studies are often done by commercial companies. 

Our goal is to evaluate the side effects of commonly used chemicals on P. persimilis under temperate and hot conditions. Each compound will be tested at three different exposure levels: direct exposure, in-direct exposure (through exposed prey) and residual exposure (via exposed leaves). Various life history parameters are monitored as well as behavioural changes.