Nature's Miracle is the best litter I've ever used. It's made from corn cobs, has a natural odor, never too strong.
It's more expensive, but in the end it comes out the same because I don't have to change the litter as often - just scoop out the clumps.
It is flushable, but I usually don't flush it because I have three cats and I'm afraid it would be too much for the plumbing to handle. I can't stand the way clay litter smells, even clean.
I've tried Arm & Hammer, which is also made from corn cobs, and less expensive than Nature's Miracle, but for some reason they add some type of chemical which they will not identify, that makes it smell unnatural and way too strong.
Nature's Miracle also makes Fresh Results, which by admission, is the same exact litter as Nature's Miracle. The difference is it is less than half the price and only sold at certain Walmart stores.
Sadly, the Walmart stores in Minnesota do not and will not carry it for some odd reason. I encourage everyone to try Nature's Miracle.
I buy it at Petco or Petsmart. Way more expensive at smaller pet stores. I'd love to hear comments from anyone who has tried it, good or bad.