The rubbing alcohol/oil mixture will work. You can drench the soil with it to kill any eggs in the soil and put it in a spray bottle for the leaves. You must be diligent if you use this method as it works on contact by smothering the eggs and adults. The Bayer Advanced Garden Rose and Flower spray comes in a 24 oz spray bottle that can be easily used indoors. In fact, I just used it this morning on a couple of my plants. Being a systemic, the Bayer product does not have to be used quite as often, perhaps once every seven days for two or three weeks.