I've used FP and my cats like it. There's another product called Woody Pet. It's the same thing only it's broken down into smaller pieces. That's what I use now. It could very well be when they try to bury their stuff, it flies outta the box. I know that's happened to me in the past. Woody Pet is what I've used the longest and have had no problems. You can get it at any Feed store (Agway) and it comes in 40 lb bags for $7.99. ALOT cheaper than Feline Pine. Feline Pine DOES come in a scoopable type as well. But the tracking is pretty bad.