A scoop has a handle and curvilinear base such that the scoop is narrower at an extreme end and deeper at a back end, the back end meeting a handle. A front most region of the device meets the top side of the device in some embodiments, such that side walls, the top side, and the bottom side join at a front end. The bottom side of the base has a plurality of spaced apart slats with portals therebetween. The slats are closer together near the front side than the back side, becoming progressively more spaced apart. In this manner, a smallest size particulate matter falls through the slats at the front end of the device while progressively larger particulate matter falls through towards the back end of the device in proportion to the increasing space between the slats.