I give mine a complete washdown and litter change every 7 to 10 days. It's true, my chins LOVE a clean cage! In other words, I do it that often for their pleasure. (The litter is never very dirty at all in my males cage....he has a corner
litter box, which I assume he uses, because there is never a pee corner in the litter...but clumpies in the litter box. My female has the pee corner because we just got her and plan to move her in with the male eventualy so we didnt get her a litter box.)