Are you talking about Bahaia? Anyway, check into a product call Ally or Manner. Ally is labeled for farm use Manner for turf grasses. Manner is about twice the price but is the exact same chemical. A friend of mine had a big problem with Bahaia in his Bermuda and Centipede. He sprayed about 5 acres and it wiped the Bahaia out without harming the Centipede or Bermuda.