Digging up, mowing and mulching, and treating with herbicides are ways to kill chamberbitter weeds. The plants in question (Phyllanthus urinaria) can be dug up in the seedling stage and prevented by regular mowing and mulching. They respond to chemical treatments with pre-emergent and post-emergent weed-killers on the following basis:

• for lawns, pre-emergent atrazine in centipedegrass and St. Augustinegrass; isoxaben in bermudagrass, centipedegrass, St. Augustinegrass, tall fescue, zoysiagrass;
  
• for lawns, post-emergent atrazine in centipedegrass, St. Augustinegrass; dicamba, mecoprop, 2,4-D in tall bermudagrass, tall fescue, zoysiagrass as well as reduced rates in centipedegrass and St. Augustinegrass;
• for landscape beds, after greening-up in spring, glyphosate as a pre-emergent and -- but not among new plantings -- isoxaben as a post-emergent.