Ive had lots of girl cats but my two boys are )were) LOUSY at cat box etiquette. Crazy Martin poops inside then leaves the box and tries to use a tile floor to scratch on to somehow cover it while outside the box! Female cats are better at litter cover up!! I use clay litter and when it gets urine down in the bottom they wont dig. I sprinkle fresh litter on top to keep top 1" fresh always.