How do you kill Soft Leaf Pennywort in Buffalo lawns?

Dear Graeme,

Unfortunately Buffalo Pro Weed n Feed will not kill the pennywort that you have growing in your buffalo lawn. Buffalo Pro Weed n Feed will kill weeds such as bindii, clover,dandelion, thistles and other broadleaf weeds in a lawn area. It may be a tedious task but you could carefully apply Yates Zero Rapid 1-Hour Action Weedkiller to the foliage of the pennywort making sure that the product does not come in contact with the buffalo grass. I wish there was an easier way to remove the pennywort from your lawn but unfortunately there is no selective weedkiller that I can recommend.