Stop flies with Yellow!

Khoury reports that “Flies are more than a nuisance. They are the carriers and transmitters of numerous diseases, including particularly dangerous ones such as cholera, typhoid, and gastrointestinal illnesses. . . . In hot, humid countries like Indonesia, flies are a part of everyday life. . . . Many school canteens are open-air, making it even easier for flies to access the food. . . . After observing plates of food on either a brown wooden table or a similar…

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