Answer: How disappointing for you! Studies show that persistently pulling bindweed is the best control strategy. Bindweed produces enough energy to start strengthening the roots when it reaches the six-leaf stage, so never allow plants to produce more than six leaves. Pull them as soon as you recognize them. Eventually you'll starve out the roots of the pesky plants.
According to Kansas State University, "Homeowners can use a combination lawn herbicide containing dicamba such as Trimec, Weed-B-Gon or Weed-Out" to gain control over bindweed.
Best wishes with your lawn!
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