I'm a first year pool owner. I've been getting my liquid chlorine from Menards. It's super cheap and always very fresh... within days usually. I was afraid this might happen, but my store is done selling this "seasonal" item. My pool is staying open for another 5-6 weeks. I don't want to buy from a pool store - in my experience they are expensive and dated. Are there any other big box stores that sell liquid chlorine further into the fall?