Just imagine what it will do for your pool. Use weekly to prevent oil and scum at the water line, eliminate cloudiness and trap metal particles to help improve filter performance. MAIN INGREDIENT: Natural polymer from the chitin in crab shells SHELF LIFE: 5+ years INSTRUCTIONS FOR USE: Dilute Chitosan Clarifier in bucket of water & broadcast around entire pool area area Allow filter to run at least 6 hrs best results. DOSAGES: For weekly maintenance add 2 oz per 10,000 gals of water.