what i do is in the hutch i have drawer lining to protect the wood then newspaper on top of that and then the vetbed. thats it. with my hutch in the bedroom bit they have extra fleece blankets, hay and stuff.
well i have 2 piggies and they have a very large space. i do it on the 5th day but when i did it this time as its the first time since having the extension i could go another 2/3 days. it was dry and fairly dry underneath too.. think it may of been cos they were peeing in the cavy cuisine food and not eating it. might have to go back to their normal dry food
I usually put puppy pads (Absorb wee) under and then the vet bed on top. They each have a corner of hay which is in a piggy litter box so it doesn't get on the Vet Bed too much but it's a low one so they can climb on it easily. (Almost flat) and I call it their 'Hay Loft' lol. When it comes to washing I shake out the vet bed in the garden and just throw it in the wash!