The Nano-Chitosan and Papaya Seed Extract Larvicide is a natural and eco-friendly product made to control Aedes aegypti mosquito larvae in a safe and effective way. It combines nano-chitosan, which is made from shrimp shell waste, with papaya seed extract from unused papaya seeds. Both ingredients are biodegradable and environmentally friendly. Shrimp shells are first cleaned, dried, and processed to extract chitin. The chitin is then converted into chitosan through a deacetylation process.