"We used Carefresh for months, and I do recommend it as a great product. Still, Total Comfort gets compacted a little more, and the guinea pigs walk easier on it. It is really absorbent, and has little dust. Not cheap (we clean the dirty/wet areas every day) but worth it. Our gps are in the cage all the time and deserve the best (and safest) bedding. Put timothy hay in a corner and they will take naps there. The bedding underneath will absorb the urine and the little critters will stay dry, healthy and happy."