Physan is for fungus. It is not an insecticide. As Mayres says, you need a systemic like Bayer Rose and Flower Spray. It will literally get into all parts of the plant and will kill the bugs from root tips to leaf tips. Use it once a week for three weeks. I would treat all your plants. Then keep a vigilant eye on them as this pest spreads like wildfire. It sounds like you need this spray in a hurry.