For years I have been struggling to eliminate white flies which infest Plumaria, Hibiscus etc. I may have found a way to control this pesty bug. Try sprinkling WORM CASTINGS (Droppings) on the ground, This will control if not , eradicate, the the problem. I got mine at a nursery in Mission Hills, but they are also available on the internet
White Flies
Less than 1 min.