DryOx Public pools UN 1496 (60 tablets) is the perfect product for biofilm removal. It is suitable for use in public spas and swimming pools. DryOx easily cleans difficult-to-clean areas such as pipes and tanks. Each DryOx tablet dissolved in water produces 2 g of chlorine dioxide, which is a soluble gas. Its advantage is that it passes through the biofilm, removing it. DryOx is about a hundred times more effective at removing biofilm than chlorine. DryOxin contains less trichloramine, which creates a strong chlorine odor. The product used should be used regularly for best results.