'Natural' insect repellents are plentiful but not always reliable
Saturday, June 4, 2011 - 18:00
in Physics & Chemistry
Consumers now have an array of "natural" insect repellents from which to choose. These are made from benign-sounding plant extracts or oils such as citronella oil, soybean oil, peppermint oil, cedarwood oil, lemon grass oil and geranium oil. What consumers don't always have is proof that they work.