Definition. In rhetoric, exigence is an issue, problem, or situation that causes or prompts someone to write or speak. The term exigence comes from the Latin word for demand.. It was popularized in rhetorical studies by Lloyd Bitzer in The Rhetorical Situation (Philosophy and Rhetoric, 1968).
Enzymes absorb Sludge. Lemongrass as an insect repellent. Lemongrass herb is a very popular plant found commonly in India and used for medicinal, food and mosquito and insect repellent products. The lemongrass oils are also used in cosmetics, soaps, perfumes, dyes and odorizes along with thousands of other products.
Oil of lemon eucalyptus is as effective as low-concentration DEET, non-irritating to the skin, but also with a strong, distinctive smell. Undiluted plant oil extracts from peppermint, basil, rosemary and celery seed have all shown the ability to kill mosquito larvae.