I'mI have it moving into my yard due to neighbors that do nothing to their lawn. I've kept it in check the last few years so it hasn't spread any further than it initially did.
Whether it's creeping Charlie or violets use triclopyr with a surfactant. Hit it twice.My yard is so much greener than the neighbors' yards. Of course, its full of dandelions and vioket looking weeds, but at least its green!