With the increase of resistance of pests to synthetic inorganic pesticides, and its negative effects to other living organisms, this study determined the property of Callophylum inophyllum tree parts as organic pesticide to pests, ants, mosquito larvae, and termites. Specifically, this study compared five treatments: crude leaf extract, leaf extract and water solution, crude seed extract, crude seed extract and water solution, and bark and water extract in terms of the mean cumulative percentage mortality of the organisms in an eight-hour experiment period. Fresh leaves, barks and seeds of bitaog were gathered. Cleaned 250 grams of each plant part were finely ground in a blender, then soaked with distilled water overnight. The infusion was extracted by squeezing. Spraying was used as fumigation technique to termites and ants, and submersion, to mosquito larvae. Results showed that crude Callophylum inophyllum leaf and seed extracts and bark-water extract have pesticidal property against the test organisms. Within the observation time of eight hours, there is a significant difference between and among the percentage mortality of the different test organisms. Further study has been recommended to determine different concentrations so that the toxicity levels be established and for possible insect repellent development of the extracts.