My cats typically avoided this litter catch and just jumped over it when leaving the litter box cabinet. 

There is a little flap on the back in one of the corners that is there for you to empty what it catches. However, mine caught hair, liter, wet liter, and dust. There is no real easy way to clean between the grates and the base of the catch all. Plus you can't really rinse it out with a hose since it's made of some kind of wood that resembles very thin wood used for making dollhouses. Maybe if it was made out of different material and the grate piece or the bottom piece could slide out to be able to fully clean the catch, it would be worth another chance.