My cat does not bury her feces when she uses the litterbox. She only scratches the side of the litterbox and the flap door (we have a covered litter box). I've tried different brands, but she still does not bury it. I've searched online and tried different methods like burying it in front of her or filling the box deeper, but nothing works.
Any advice? I got her when she was only about 2 months old and had to teach her to use the litter box. I always assumed that burying their waste was a natural instinct for all cats.