Can you recommend appropriate combination of JS and JHS to combat the oriental fruit fly infestation? Chillies, mangoes, guava - nothing survive their onslought, short of growing them inside a greenhouse. What ratio would be good, and how frequent?
Based on 20L, we recommend 600ml of JWA, 600ml of JHS, and 40g of NaOH (pre-dissolved in a little water and mixed with it). If there is a large amount of fruit flies, it may be necessary to spray every day. Be sure to use soft water for water. JHS recommends using oleander or bracken.