I started keeping 2 guinea pigs in store-bought cages in 2016, then I moved to c&c cages. now I have a room designated for them, they have about half the room to roam (their enclosure) and I use fleece and paper bedding. I like the Petco and PetSmart paper bedding because there are so many different colors! I have blue in the male piggies' enclosures, and pink and green by the females! I have a bigger cage for the girls' cuz I have lots more girl guinea pigs than I have boys. as a matter of fact, I have only 6 boys!