The choice of organophosphates for the experiments will be based on the type of organophosphates that the farmers already use. In other words, the farmers will not be exposed to less or more dangerous pesticides than what they usually expose themselves to. During the data collection the organophosphates will be stored according to their safety label recommendations. In case, the remaining organophosphates cannot be used in other studies they will be disposed by taking safety precautions as recommended by the World Health Organization.