It is an object of the present invention to provide a method of producing materials for disposal of animal excrement comprising an aromatic material and granules comprising a water-absorbing base material, whereby the aromatic material can reliably adhere onto the surfaces of the granules with suitable coverage, and the working environment is not potentially impaired by fly-off of the aromatic material. The production method of the invention comprises the steps of: partially adhering an aromatic material (2) onto granules (1), and transferring aromatic material (2) adhered on one granule to another by vibrating the granules partially adhering the aromatic material (2).