I have been buying these mats for a couple of years now. I have finally found a mat that works. It keeps litter from spreading all over the house. Is it perfect? Of course not. But it works very well at keeping most that pesky sand where it belongs - by the litter box. Another advantage is you can trim it based on your space needs. I have put mine in a small closet which is shorter than the mat. I have simply trimmed around it to meet my space requirements. It's also washable. We scrub ours with soap, water and brush in our driveway, hang it on the fence, and by the end of the afternoon the mat will be ready to be used again. Good purchase. Highly recommended.