Ever Clean® Kitten - cat litter

I bought this litter because it said it was completely dust-free. I have three kitten cats, including a Maine Coon who's very sensitive with his breathing. As soon as I opened it and put it in the tray, a huge cloud of dust went up, and the next day my Maine Coon started sneezing. It's absolutely not true that it's dust-free, in fact, there's way too much dust!!