Rewashing The Algae Off The Sidewalk F26 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ washing the slippery algae off the sidewalk where the sump pump keeps wet all the time. Date: September 18, 2026 Image: a green power washer handle spraying a sidewalk, there is a clear line where it has ran and cleaned, and green grass on either side washing the slippery algae off the sidewalk where the sump pump keeps wet all the time.