I use deep litter method with horse bedding that may not work where you are but I keep around 6-8” of bedding in my houses depending on time of year I go in daily and scoop out the wet poopy stuff fluff and add new as needed usually every 2-3 weeks . I scatter the spent shavings all around the...
If your Runners are anything like mine they like to back their lil butts right up against the wall so I put vinyl up around their laying area so it would be easier to clean