Hello! I am having a terrible time with aphids on my 2 hibiscus plants. I've had the plants for years and if I had a problem, it was easily solved (water/vinegar spray). Not so this time. This is what I have done: 1. wiped off the underside of the leaves with paper towel/water. 2. sprayed underside of leaves with water sprayer several times in the shower. 3. misted the underside of leaves with a white vinegar/water solution (3 water to 1 vinegar). Sprayed the underside with "Protect with Neem Oil" spray from "We the Wild". The problem only gets worse. My floor is sticky and aphids are flying around whenever I move the plants or bump in to them. I bought: AzaSol- a non-oil water soluble powder. Disolves in water. Says it's good for pest control for aphids (and others). I haven't used it yet because I wanted to reach out to ask for your advice first. It may be my apartment was too dry this winter? I don't know what encourages aphids to multiple SO rapidly. Whatever, I would love your help. I just put the 2 hibiscus plants out on my balcony, hoping the wind out there would help blow some of the aphids away....