The OnGuard 1” Maxi-Clor chlorine tablets were designed to disinfect pool water, eliminate mineral scale buildup, and clean your swimming pool water in a manageable size. Created to maintain a clear pool of all sizes, these chlorine tabs also have superior sun protection and a slow-release formula to slowly distribute chlorine to your pool over the course of days. Keep your family and friends entertained by the pool all summer long by keeping a supply of OnGuard pool chlorine handy. The convenient 1.5 bottle contains approximately 50 tablets. OnGuard is a trusted name in pool and spa maintenance products. These super chlorinating tabs were designed to be easy and effective in sanitizing, chlorinating, and producing clean and clear pool water. OnGuard Chlorine tablets work well with vinyl-lined pools and salt systems. Apply the recommended number of tablets to feeders, floaters, or skimmer baskets using the instructions on the rear of the bottle as a guide. Active Ingredient: Trichloro-s-triazinetrione (99%).
I switched to the Onguard brand recently when it was the only brand available because of the chemical shortage. It's performed well compared to past seasons with Clorox and Kemtek. The price isn't bad and as I mentioned, it's been in stock nearly all year. Eztestpools.com has been great. They ship quickly and have good customer service.
Works great in our 15' Summer Escapes pool. Keeps the water clear all summer. A single tablet lasts roughly one week. Overall the product works well for our setup.
I have 2 floating chlorine feeders which I put in the pool when my family is not using the pool. I put a few tablets in it regularly and the water was clear! The size is great for slow dissolving but they also are convenient so I can add as much or as little as I need. I highly recommend getting these!