Texas Gardening: How do I get rid of this without killing my lawn?, 1 by darkmoondreamer

darkmoondreamer wrote:
Poison oak or poison ivy? Whichever, I'm not allergic to it, but I have heavy wood runners of this crud running underneath the soil and grass all over the yard on one side of my house. It is EVERYWHERE! I'm tired of trying to pull up the runners, it does no good, they just come back. I've tried Roundup and diesel fuel. What can I use that will kill those runners in the ground without killing what St. Augustine grass I have?