Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to clean your kitty litter box [title] Scoop it once a day. [step] Your kitty likes a clean litter box, and while you probably don't want to change the litter completely every day, scooping it daily will help keep your cat happy. You should definitely scoop out out any feces, as well as any pee clumps if you're using a clumping litter.

Ending1: [title] Avoid using her litter box if she is over six months old. [step] Cats often scatter feces into litter boxes. Ending2: [substeps] You can find clumping litter at most pet supply stores. [title] Wipe the top and bottom of the box with a clean microfiber cloth. Ending3: [title] Try to catch your cat's droppings. [step] In order to protect your kitty from mold, you should wipe down the box with a damp cloth. Ending4: [substeps] To scoop it, use a litter shovel to remove the clumps. These scoops are slotted, the clean litter falls below, while the scoop keeps any clumps.

Answer format: ending1/ending2/ending3/ending4