How To Make A Makeshift Litter Box. Then, place a layer of hay over the grid. When you're ready to clean, sift the clean litter into the empty plastic bin (see below) and voila!
Others were concerned enough about what might happen that they made makeshift litter boxes (cardboard box lid, for example) with dirt/soil/leaves in them to simulate their 'outdoor bathroom'. The ideal solution may be a brand new plastic litter box in a style and size that your cat is accustomed to. Just mix it with one cup of some baking soda for a clumpable, deodorizing solution for your litter box.
For an adult cat, the sides can be four to five inches tall or even higher.
If she doesn't wander in on her own, put a few treats inside to entice her, or pick her up and put her in there. Once the sides are cut, take your duct tape and cover the sides, inside and outside. So my first action would be to dump the litter, scrub the box out well with a mild, unscented soap (i use dish soap), dry the box, sprinkle baking soda into the bottom of the box, then add around 3 inches of litter. The litter box in the photos was made for and used by those kittens.