The present invention describes a pesticidal compositions containing a pesticidal natural oil, Neem, and a pesticidal natural fungal entomopathogen, Beauveria bassiana. These compositions can be used to control pests by killing the pests, preventing or reducing feeding, preventing or reducing eclosion of their eggs. These compositions exhibit effective or more rapid knockdown pesticidal activity, and synergistic pesticidal activity. These compositions can be used to control pests including insects and/or arachnids, including arthropods such as whiteflies.
