No. But I don't use much soap, either. It hasn't seemed to hurt them. I try to keep my yard pretty much organic, so I sometimes spray my outdoor plants with soapy water too, for bugs. It never seems to harm the plants. On an online soil forum, some guys once told me to use Ivory liquid, but I don't even remember why they said the Ivory was preferable.
But I think if you use a systemic insecticide even on only a few plants, when the bug bites that treated plant it dies, and their cycle is broken.
Karen