The purpose of this investigation has been to develop, evaluate, and optimize biorational management tools for Asian citrus psyllid (ACP) including insect growth regulators (IGRs), antifeedants, available repellents, and standard insecticides. Initially, we determined the optimal temperatures at which to use currently available insecticides for ACP control. This was published in a peer-reviewed journal (Journal of Economic Entomology, Vol 102, 685-691). Second, we investigated the activity of the IGRs pyriproxyfen (Knack), buprofezin (Applaud) and diflubenzuron (Micromite) on ACP eggs, nymphs and adults to evaluate their potential usefulness as biorational insecticides for inclusion into integrated pest management (IPM) strategies for ACP control. All three chemicals exhibited strong ovicidal and larvicidal activity against ACP eggs and nymphs, respectively, in age- and concentration-dependent manners. Fewer eggs hatched into nymphs at the higher concentrations tested (80-160 ‘g mL-1). Furthermore, all three chemicals exhibited transovarial activity by significantly reducing the fecundity of females and viability of eggs deposited by females that emerged from treated fifth instar nymphs. Topical application of each chemical to adults also significantly reduced fecundity and egg viability. Application of each chemical at 160 ‘g mL-1 resulted in the highest inhibition of egg hatch in younger eggs (0-48 h old) laid before or after treatment and strongest suppression of adult emergence from early instar nymphs compared with other rates tested. Each chemical also markedly reduced female fecundity and egg viability for adults that were exposed either directly or indirectly. Also adults emerging from nymphs treated with pyriproxyfen were deformed and died soon after emergence. The direct (ovicidal and larvicidal) and indirect (transovarial) effects of the IGRs against immature and adult ACP, respectively, suggest that integration of these insecticides as part of an IPM strategy should negatively impact ACP populations over time. In a subsequent investigation, we have been studying the sub-lethal effects of various insecticides. Given the broad use of imidacloprid for management of ACP, particularly on young trees, we investigated it’s possible sub-lethal effects first. Because of the variation in spatial and temporal uptake and systemic distribution of imidacloprid applied to citrus trees and its degradation over time in citrus trees, ACP adults and nymphs are exposed to concentrations that may not cause immediate mortality but rather sublethal effects. Our objective was to determine the effects of sublethal concentrations of imidacloprid on ACP life stages. Feeding by ACP adults and nymphs on plants treated daily with a sublethal concentration (0.1 ‘g mL-1) of imidacloprid significantly decreased adult longevity (8 d), fecundity (33%), and fertility (6%) as well as nymph survival (12%) and developmental rate compared with untreated controls. The magnitude of these negative effects was directly related to exposure duration and concentration. Sublethal concentrations of imidacloprid negatively affect development, reproduction, survival, and longevity of ACP which likely contributes to population reductions over time. Also, reduced feeding by ACP adults on plants treated with sublethal concentrations of imidacloprid may potentially decrease the capacity of ACP to successfully acquire and transmit the HLB causal pathogen. Pymetrozine is a chemical that is known to paralyze the muscles involved in plant probing in plant-sap sucking insects such as aphids and is known to prevent transmission of aphid and whitefly transmitted viruses. Thus, we felt it was an optimal candidate to test if it would prevent transmission of HLB by nymphal and adult ACP. Our results have confirmed that pymetrozine does not prevent transmission of the HLB pathogen by ACP and thus will not be a useful tool for ACP management. During the first year of this investigation, we have exceeded the goals outlined for year 1. We hope to continue in year 2. The positive benefits of IGRs have been recognized by many growers who use them successfully in their annual pest management programs.