The ornamental design for a polescrubber, as shown and described.
FIG. 1 is a perspective view of a pole scrubber showing my new design.
FIG. 2 is a front view of a pole scrubber according to FIG. 1.
FIG. 3 is a rear view of a pole scrubber according to FIG. 1.
FIG. 4 is a right side view of a pole scrubber according to FIG. 1.
FIG. 5 is a left side view of a pole scrubber according to FIG. 1.
FIG. 6 is a top view of a pole scrubber according to FIG. 1; and,
FIG. 7 is a bottom view of pole scrubber according to FIG. 1.
In the above drawings the broken lines and the areas within the broken lines form no part of the claimed design. Additionally, the handle is shown broken away in some of the views for ease of illustration.