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All about mole crickets, their habits and their elimination: Molecrickets, Mole Crickets, Molecricket Elimination

And note: "Mole crickets are especially fond of Bermuda and centipede grass, but have also been found in St. Augustine lawns in the Florida Panhandle and along the Alabama coast." So, if not already done, you might want to confirm with a professional pesticide person that the critters are mole crickets.