Hi brother, I also buy ladybug larvae and release them outside to fight aphids. As I have already told you before, your plant is infested with mutes and not aphids so ladybugs are not very effective. Furthermore, the packages contain the larvae and not the adult and a large population of aphids is needed because otherwise the larvae would starve (1 larva must eat no less than 100 aphids per day to survive). Just this morning I bought an organic spray with thyme and nettle essence, let's see how it goes, I have a plant with an initial mites infestation. Try it too.