Here is some information on creeping charlie:
Killing creeping charlie is only the first part of control. It takes over whenever the turf (or garden) allows it to do so. A thick, healthy lawn will be better at fighting back. Ensuring the lawn gets enough fertilizer, water and sun for its type will go a long way in keeping it at bay. See http://www.extension.umn.edu/garden/turfgrass/pests/weed-control-in-lawns/ for more info.
Hope this helps.