Update, so far yesterday's news is not working out. It took the entire 30lb bag to cover the bottom of a 2x4 c&c cage. I expected it to be soft but it's hard, like food pellets. The litter pellets rattle, so when the piggies move it's really loud rattling against the chloroplast. I suspect putting something under the litter would diminish the noise but my piggies would eat anything I can think of to put under the litter (newspaper, cardboard, etc.). They also seem to think I've lined their cage with thousands of food pellets, they do look the same. Both pigs keep trying to eat them and then looking confused. Yes, their regular food bowls with their regular Timothy pellets are in the cage too. They both act like they don't like walking on it, and when they chase each other those litter pellets go flying everywhere and the piggies' feet keep sliding out from under them. And Penny is just terrified of the noise anytime she or Ferb move so she keeps startling. I suspect every time they move tonight it will wake me up. I'll give it a day or two to see if anything improves, unless they don't stop eating the litter which can't be good for them. I still have 1/2 a bag of carefresh so may mix that in to see if it helps with the noise. I'm open to suggestions if anyone has any!