Abstract: The present invention is a simple and inexpensive removable trash bag support and liner. The liner of the present invention is a single, generally rectangular piece of plastic, preferably about 1/16? thick, about 32? high, and with a width (which becomes the perimeter) about 68?. Also, the liner may have several hand holes near its upper and lower edges to facilitate lifting it out of the bag when the bag is full of debris. Also, the liner has a temporary locking mechanism for holding it in a set cylindrical position. When the lock is engaged, the bag liner may be set in a self-standing manner for its edge, and an empty garbage bag easily placed over the liner. Then, when the liner and bag are inverted to the upright position, releasing the locking mechanism lets the liner automatically expand to fit tightly within the plastic bag.