A friend i know has some plants that are starting to flower. They are also under attack from whitefly. It does not seem to be epic proportions but if you give the plant a good shake 20 to 30 white fly take off and go to another plant (my friend says). At this stage i dont think its wise to use an insecticide on them, but when i think that these little shi*s are sucking the life out of my friends plants it makes me mad as hell. Any help would be appreacieated.. PS 4 plants indica and 2 sativa. the indica are about 3ft tall and the sativa 6ft. the indica are into flower stage and the sativa are just starting, (my friend says).