Herbicides Safe to Use on German Chamomile

Do you know if there are any herbicides that are safe to use on chamomile for weed control?

The following herbicides have been used on german chamomile:
Pre-emergent application: trifluralin (0.6 kg/ha), ethofumesate (2 kg/ha), linuron (0.5 kg/ha), propyzamide (1.5 kg/ha).
Post-emergent application: prometrin (1.5 kg/ha), mecoprop (1.2 kg/ha).