From the article you linked-
Sometimes people refer to pesticides based on natural substances as "organic pesticides," or "naturally derived pesticides." Pesticides allowed in organic agriculture are typically not human-made, although there are exceptions. They tend to have natural substances like minerals and plant extracts as ingredients. However, not all natural substances are allowed in organic production. Natural substances like arsenic, strychnine, and tobacco dust (nicotine sulfate) are prohibited.