How are people in Houston or nearby getting their chlorine? With a huge pool, I would prefer to have it delivered (free of course) and I would like to have the 12% strength but so far, I am not seeing this available to the average homeowner. Even just 2 containers at day (96 oz.) would cost me $6 or $7 at current supermarket prices, which adds up to at least $180/mo and a whole lot of hauling and dumping. Please chime in with your suppliers!