I've recently started using bath mats over wood pellets, after reading about some positive experiences with this combination. I'm very satisfied with this so far. I have one piggy that pees a lot, and even more so now that she's on heart medication. I had to change pee pads 2-3 times a day (they were soaked then) and the fleece liners every two days. They were completely soaked through. Before that I tried lots of other beddings, none of which was able to keep my piggy dry.
Now with bath mats and wood pellets the mats just stay dry. I've checked it multiple times a day, and every time the bath mats were dry. Also, there are no urine smells. I change the mats after half a week because of stains rather than them being wet. First I started with half the cage and yesterday I put them in the whole cage. So happy that I've finally found something that works for us.