The invention relates to a method to manufacture meat-based matrices and the matrices obtained thereof useful as bait for ant control. The method of the invention comprises (a) cleaning and mincing or slicing meat; (b) cooking the meat; (c) dewatering the meat; (d) grinding and sifting the meat to obtain meat particles; and (e) adding sugar and a preservative. Additionally, a nitrate source and an active ingredient can be incorporated into the matrices.