2. Materials and methods
2.1. Study sites and their rationale
The study was conducted in three provinces in Kenya namely Nairobi, Western (Busia District) and Nyanza (Homa Bay, Kisii Central, Rachuonyo and Kisumu East Districts) (Fig. 1, Fig. 2 and Fig. 3). Busia District is a major peanut producer and has several market outlets for peanuts. Additionally, the district has a border point with Uganda, another major peanut producer, which is characterized by a thriving cross-border trade. Nyanza province is also a leading producer of peanuts (Anonymous, 2004) and has several peanut processors as well as a high demand for peanut products. Nairobi is a major market outlet of peanuts and peanut products sourced from within Kenya and other countries, and has both large and small scale peanut processing enterprises.