The ornamental design for a drawstring trashbag, as shown and described.
FIG. 1 is a front elevation view of the drawstring trash bag showing our new design, the back view being identical; and,
FIG. 2 is an enlarged view of the oval shape taken from FIG. 1, shown separately for ease of illustration.
The broken lines showing the bottom portion of the bag are for the purposes of illustrating portions of the “article” and form no part of the claimed design. The characteristic feature of the design resides in the shape, location, and orientation of the oval-shaped seals located in the upper corners of the drawstring trash bag as shown.