1、This product takes trichloroisocyanuric acid as the main active ingredient, and the effective chlorine content is 36% - 44%. It can be safely used. 2、It can effectively remove bacteria, algae and other organisms in the water and protect the clean and sanitary of swimming pool water. 3、Cleaning tablets are easy to use, just one tablet can create a safer, cleaner and more pleasant swimming experience for you. 4、Equipped with a small bottle for easy storage, it is very suitable for use in the swimming pool. 5、It can also be used in wards, pets, kitchens, bathrooms and other places to create a clean living environment for you. 100 x Pool Cleaning Tablets (1 Bottle) Condition: 100% Brand NewItem Type: Pool Cleaning TabletIngredient: Trichloroisocyanuric AcidWeight: Approx. 118g / 4.2 OzBottle Size: Approx. 9x 4.5cm / 3.5x 1.8in Application: Swimming Pool, Home Cleaning, etc.