You might want to look at spinosad for elimination on contact. http://www.amazon.com/Monterey-Spinosad-Organic-Garden-Insect/dp/B000BWY3OQ/ref=sr_1_2?s=lawn-garden&ie=UTF8&qid=1373556804&sr=1-2&keywords=spinosad+organic
Neem oil, azamax, sesame seed oil, are all systematic by nature which means they deal with pest issues over the course of time. They will not fix a problem immediately, or "on contact". They are effective in their own ways and will, in many cases, provide a permanent pest solution if regular treatments are practiced. Spinosad kills on contact... even western thrips, that can actually thrive on some organic insecticides.
Neem oil, azamax, sesame seed oil, are all systematic by nature which means they deal with pest issues over the course of time. They will not fix a problem immediately, or "on contact". They are effective in their own ways and will, in many cases, provide a permanent pest solution if regular treatments are practiced. Spinosad kills on contact... even western thrips, that can actually thrive on some organic insecticides.