I’m not sure if it will get rid of bugs, but I would think washing the plant with a dish soap like Dawn would help. Along with doing that, I get the plant down to as much bare root as possible, using the hose to wash all the soil away and repot it. I had a problem with ghost ants on my hibiscus, which a little bit of Terro placed outside but sitting on the stand cleared right up. If they are truly aphids, I’ve been told that lacewings will clear those up.