48 ounces, wet and forget xtreme reach hose end refill. just attach the reusable xtreme reach nozzle from your original wet and forget xtreme reach hose end for an additional 2,000 sq. ft. coverage. quickly and easily treat any large outdoor surface including roofs, siding, decks and high elevations without scrubbing or using bleach. safe for use on virtually any outdoor surface. wet and forget works over time with the rain and wind to gently clean up green and black stains caused by moss, mold, mildew and algae. the xtreme reach nozzle sprays up to 30 ft. high, so you can apply to hard-to-reach areas without a ladder.