What kind of set up do you have?
Are the indoors or outdoors?
My piggies inside are in a c and c cage of 2x5 on fleece, I find they need cleaning out about twice a week, with some sweeping every other day to remove the poop from the areas they tend to sit on alot
I also have a hay box which is just a shallow cats litter tray filled with woodshavings and hay and that gets dirty fast so I clean that out every other day.
But my two outside have a larger area so downstairs is cleaned out every two weeks with spot cleaning while upstairs where they sleep is twice a week aswell with spot cleaning.