I shake/sweep my fleece everyday, then change the fleece and towels under it (that soak up all the urine) every three days. Then wash all of them at the end of the week and let them air dry for a bit.
I clean the pull out pan with 50% water 50% white vinegar whenever I change the liners.
With liners, you can make or order them a few inches bigger than your cage size, so the sides that are up and act as guards like the bass pans do. Or use wood and make "poop guards" like the bass pans do, expect wood.
I've seen a picture of someone using fleece as a liner, but on the outside of there cage. Like hanging it on the outside but pulling it through the bars every few bar spaces.. I can't remember what thread it was in or if anyone has a picture to explain what I mean, but that could maybe be a option.