I have 2 large cats that kick litter out of the box and they also don't fit in most litter boxes, these work great! They are so easy to clean and really well made one piece plastic with no nooks or crannys or edges to catch old litter. So far they don't seem to scratch easily. The high back does keep litter in even if the cats get carried away pawing at the litter. The cats took to them first thing and the old ones went in the trash!