I just got an advertisement from Dolphin Pool Supply and in flipping through it found Poolife(R) Non Stabilized Tablets. I know that this question has been asked before, but I have seen only older threads on this. What I read in the older threads was that the tablets don't last very long. This product says that you can stick one tablet per 10,000 gallons per week in the skimmer to maintain 1-4ppm of chlorine. Is this a new product or just something I haven't seen before that is a gimmick. Let me know your thoughts. Thanks in advance.