【Water Enhancement】Mineral sticks enrich water with trace elements, ensuring clarity and comfort similar to a natural spa. 【Effortless Maintenance】Simply place them in the spa filter or skimmer basket; no complex process is required. 【Premium Quality】Made of durable and odorless ABS plastic, ensuring safety and reliability. 【Versatile Compatibility】Suitable for most spas, hot tubs, inflatable spas, jacuzzis, outdoor swimming pools, and standard bathtubs.