Hi, I just got back from pet store. Was going to buy some Kitten Attract litter. Slicks babies are 4 weeks old and very active and out of the box playing. Thought it couldn't hurt to start giving them the idea of what to do. Well the bag says 8 weeks and up. What am I supposed to use? I know I can't use clumping litter like I do for her. Her box is up off the floor so the babies can't use it. I am afraid they will eat what ever I get. What about sand or sawdust? Maybe even dirt from the yard. Any suggestions would be greatly appreciated. Shannon