How often you change your cat litter or scoop out cat poop depends on how many cats you have, how much your cat poops, the type of litter you use, as well as what you prefer (aka what works for you).  Many cat owners and experts recommend a monthly change, but you may find that you need to scoop and change the litter more often. Others recommend replacing litter bi-weekly. There is also the option of changing the cat litter every few weeks, provided you scoop poop out daily or twice a day. With clumping litter, for example, cat urine becomes chunks that are easy to scoop up, and any loose litter can be shifted through the slots in the cat litter scooper and placed back into the litter box. Poop, on the other hand, will be coated in the litter, and this helps it not stick to the scoop.  After you’ve scooped up the urine chunks and coated poop, you can fill up the litter box with more litter. This ensures there is plenty of litter when your cat urinates and poops, which makes scooping easier.  With non-clumping litter, urine is usually absorbed by the wood, corn, or clay. You’ll need to completely change out this litter as it can’t really be scoped.