No rubbing, No scrubbing Removes most blue, brown, yellow, metallic and leaf (organic) stains  Pool Stain Treat's Spotting Bag is a NEW concept in stain removal. By simply placing a Spotting Bag directly over a stain, and pinning it down with a pool brush, without scrubbing or rubbing -- the stain will disappear within 24 hours. The Spotting Bag is made from the same powerful formula used in Pool Stain Treat. This products proven performance has made the talk of professionals Effective on: Plaster (marcite), vinyl, fiberglass and painted pools Rust marks made by bobby pins, BBs and toys Outside areas of rebard bleed Copper fallout from shocking General brown and blue metal stains Leaf and Organic Stains                                                       
  
 Remove rust marks  
  
 Remove copper marks  
  
 Minimize any damage to the surface  
  
 Clean the spots while you relax  
  
 Same powerful formula used in Pool Stain Treat