3-Inch Pool Cleaning Supplies: They are a convenient and effective way to maintain the cleanliness and hygiene of your swimming pool or spa. Slow Dissolving Formula: They are designed to dissolve slowly, providing a steady release of ch-lorīne into the water over time. Stabilized and Long-lasting:That means they are resistant to sunlight degradation. This feature makes them ideal for outdoor pools exposed to direct sunlight. Easy to Use: They are designed for use in floating dispensers or automatic chlorinators. Simply add them to the dispenser or chlorinator and let them do their job. Versatile Application: They are suitable for various water environments, including swimming pools, hot tubs, and spas. Whether you have a small backyard pool or a larger commercial facility, these can provide a safe and enjoyable swimming experience for everyone.