Scented or Unscented Clumping Cat Litter? How often do you fully change for 2… Scented or Unscented Clumping Cat Litter? How often do you fully change for 2 cats? Once a week or every 2-3 weeks? Online articles/blogs vary. Browse Topics: #Cats#Littermates
Daily scoops, weekly changes. Some cats are allergic to scented litter. Make sure you have 3 boxes for 2 cats.