Oh not back to Friskies yet, I'll add my 2 cents worth on the Best Cob litter. Yeah, if you liked feline pine, you could get their version of that even cheaper ($5.99 for 40 lbs) but the Best Cob although it doesn't clump hard, it does kind of pucker up like wet particle board so you can use your cat litter differ and just lift that whole wet section out. Also, when digging in the box, if you run your scooper underneath, the sort of dissolved stuff will stay in the scoop and the harder pellets will roll right off, so yes, I think it's easier to scoop than feline pine. And the chunks are mostly much smaller which encourages them to dig more rather than just drop the tootsie rolls and run (well, some of them still do that). I think it's super absorbent (it says a 40 lb. bag will absorb over 18 gallons of liquid) and it's also LIGHTER than any clay litter so you can totally fill up your supermarket plastic bags with it and still be able to carry it out to the garbage can. (I don't have garbage pick up so I keep mine in cans and then take the bags to the dump once or twice a week.) Finally, it does NOT stick to the bottom of the box. Well, if you let it get totally soaking wet, it might stick until you tapped the box, but it doesn't have any of that GLUE that adheres to the box. So it makes washing out the boxes a breeze. I don't add litter to boxes as they go down but will sometimes pour the contents of one dug out box into another and then start a new box with the empty after washing it. I have LOTS of boxes going at all times and don't want to put clean litter in with dirty litter because soon there would be an underlying smell beyond what they've already given me with spraying the doors to mark their territory. I buy Stink Free by the gallon, love that stuff. (PetsMart's own brand of oxiclean type deodorizor). As for boxes, I never have less than 10, and in the winter it's 15 to 20. They behave better when they can always find an unused box,