Just soapy water, Hetty. 1/2tsp. per quart of water. I wipe off the backs of the leaves with a paper towel soaked in soapy water. Then I spray the whole plant with it. Repeat in a week to get any new ones hatching.
These whiteflies are bigger and a lot slower than the little ones we're used to. Easy to hit with the soap spray. I did it in Feb when they first appeared, and that kept them at bay until now. I've been watching for them to re-appear.
Lucky for me, this seems to be the only plant in my garden that they like. So if they all go to it, and I git 'em when they do, problem solved. For a while at least!
Which plants do you have them on?
