Mosquitoes are one of the major disease carriers to people and many have illness due to its bites. The main objective of this study was to determine the effectiveness of citronella and garlic extracts as a mosquito repellant. The citronella and garlic plants were obtained from Mountain View College campus and the experiment was conducted where the growth of mosquitoes was favourable. The experimental research was used in which the treatment of the independent variable applied to the dependent variable to determine the effect. Manipulation and testing were used to recognize causal processes. One or more variables were manipulated to control the effects on a dependent variable. There were three factors used for the collections of data. The ANOVA test was used to find a significant difference in the treatment. The Tukey method was used to determine which Specimen had significantly differed from the others. The findings revealed that the active patterns of mosquitoes as predators were at early dawn and dusk. It was also revealed that the treated shirt specimen with citronella and garlic extracts repelled mosquitoes. The solution can be used as a mosquito repellant. A further study can also be made to enhance extract effectiveness by having more trials.