We have several guinea pigs, and these cage liners are very convenient. They have a non-slip backing and are absorbent. I shake them out over the trash can and then outside, and pop in the wash. They wash and dry nicely, and we have reused this countless times.
This is a thinner liner, so it is best used for one day, or I also use a thicker liner over another liner just to catch any heavy messes. It is gentle on our piggies feet, which is good especially for our older guinea pigs.