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.
1. Lemon Eucalyptus Oil. Lemon eucalyptus oil is one of the most common essential oils for repelling mosquitoes and its use dates back to the 1940's. In fact, this essential oil has been approved as an effective mosquito repellent by the Centers for Disease Control and Prevention (CDC).