I have 10 cats, 6 indoor and 4 outdoor/indoor and the litter tracking drives me nuts not to mention the occasional accident outside the litter box.  These are large enough and the vacuum easily with an electric broom.  I regular vacuum beater bar may tear it up and it does say not to use that on the production.  The clean up easy and fast.  Perfect for my busy schedule.  I ordered 4 and am ordering more!