Pesticides are a necessity to deter pests from harming crops, however the environmental impact of these remains a concern. To gain further insight into the efficacy and environmental impact of Capsaicin as alternative pesticide, varying concentrations of Capsaicin-based insecticide were used to protect the ‘Yellow Canary’ tomato plant (Solanum lycopersicum) from the Tomato Hornworm (Manduca quinquemaculata). The experiment resulted in the Capsaicin-based insecticide more effectively protected Solanum lycopersicum as the concentration increased. The environmental impact caused by Capsaicin has been determined to be similar to other alternative pesticides.