Bombita, Mark Jairus
Florague, Joana Liza
Olive B. Blanco
Julia Ortiz Luis National High School
Sagaba Sto. Domingo Nueva Ecija
Background of the Study
Any home can have cockroaches. They are scavengers and a health hazard. While walking on spoiled food in garbage containers, they pick up various bacterial organisms on their legs that they can later deposit on uncovered food. Cockroaches themselves are not implicated in the transmission of any diseases. However, many disease-causing organisms can grow and multiply in their guts and can then be deposited on silverware, plates etc. during defecation. For example, cockroaches can pick up disease-causing bacteria like Salmonella on their legs and later deposit them on foods and cause food poisoning. People continuously exposed to dust containing cockroach feces and crushed body parts become sensitized and may show allergic reaction and asthma after repeated exposure to such dust. (http://www.nyc.gov/html/doh/html/ehs/ehscroach.shtml# american) Pest repellent plants are herbs, flowers and vegetables naturally capable of driving away pests, insects and animals through normal organic chemical means. Their leaves and other plant parts contain organic compounds that confuses or pushes away harmful pests. Pandanus amaryllifolius is a tropical plant in the Pandanus (screwpine) genus. The plant is rare in the wild, but is widely cultivated. It is an upright, green plant with fan-shaped sprays of long, narrow, bladelike leaves and woody aerial roots. The plant is sterile, flowers only very rarely, and is propagated by cuttings. In Southeast Asia, Pandan leaves are used widely as a flavoring and also used as a source of fragrance. However, the same fragrance that attracts people is found to be repulsive...