The present invention relates to a sanitary device for domestic animals. The sanitary device comprises a container (1) and at least one liquid absorbing unit (5) which is arranged to be placed in the container (1) and which after use is arranged to be removed from the container (1) in order to be replaced by a new liquid absorbing unit (5). The liquid absorbing unit (5) comprises at least a first liquid absorbing material (7) which, at a procurement occasion, is substantially sheet-shaped and comprises at least one stamped out form. When said liquid absorbing unit (5) is arranged to be used, at least one area of said stamped out form is gripped and lifted upwards whereafter the area is mixed with other areas of said stamped out form, such that an airy layer is formed in the container (1).