theres no easy way to get rid of these ...if painting with whatever you used is too time-consuming ( we used to paint with meths)...then take a deep breath anf throw out all plants you suspect to be contaminated before the problem spreads even more.

on the subject of bio-control ...its the larva stage of ladybirds that do the eating...you need to hope the adults lay eggs on the infested plants...wont work in a house though...

finally you presumably brought these pests in on a new plant...check check check new plants for pests and diseases ..especially the underside of new growth ...before placing them among your treasures.