Great for keeping litter contained in the area of the litter box (ours is in the garage and got tired of finding all the little stray pieces all over the house), so this helps a lot by trapping some of those.  My 2 Bengal cats had to be "introduced" to the mat. It could have been the texture or the odor.  I gave them Temptation treats on the mat so they would get accustomed to the different feel under paw. I started with the litter box half way on the mat, and over a few days moved it to the back center (like in the picture). 

Pros: Great value; Good large size
Cons: none