Okay, it's not a sexy topic, but hopefully helpful. Then again how many sexy posts do I have, not too many. Hmm, maybe I should rethink that, but back on topic. We bought this box of detergent a year ago, give or take a week, and have just finished it. Given the cost of detergent, I think this is amazing. And I like the product. It does a good job, for us, and hasn't left streaks.