Figure 1

Spraying palm woven mats with DDT. Palm woven mats previously cut out to fit on the walls of experimental huts were sprayed with 2 g/m² DDT. Spraying was conducted in a temporary structure that was later burnt. Spraying the mats instead of the walls ensured that mats could be moved easily from one hut to another without contaminating the walls. This allowed rotation of treatments between huts.