A method for reducing dust in granular clay. The method comprises contacting the clay particles with a polymer comprising at least 50% by weight of acrylic acid polymerized units and having a Mw of 1,000 to 100,000.粒状粘土中の粉塵を減少させるための方法。本方法は、粘土粒子を、少なくとも50重量%のアクリル酸の重合単位を含み、かつ1,000~100,000のMwを有するポリマーと接触させることを含む。