A disjoinable loop is disclosed. The loop is curvilinear with a flat side, the flat side being separable from itself to disjoin the loop. On the other side of the disjoinable flat side are flanges which are mechanically connected to, and operable by, a switch which causes the loop to either join or become disjoined. In some embodiments, the default position is to have a joined loop, while in others the default position is to have a disjoined loop. An extension arm separates the switch from the loop. A bag placed over the loop is used to catch excrement falling from an animal and, upon joining the loop together, the bag falls from the loop. In this manner, one can easily collect pet or other waste into a bag.