Pool Blok is the ultimate solution for crystal-clear pool water! This innovative product is specially designed to eliminate tough stains and deposits that can build up on pool surfaces over time. Made from a unique blend of natural ingredients, Pool Blok is safe, effective, and easy to use. Simply wet the block and gently rub it over the stained area to watch stains disappear before your eyes. Say goodbye to unsightly stains and hello to a sparkling clean pool with Pool Blok!