I have 2 cats.  Yes...I'm a cat guy.  Less effort than a dog.  I don't have time for a dog.  It's almost harder to have dogs than kids.  So I went with cats.  Kitty Litter is a problem.  The solution I found is to SCOOP THE STUFF OUT AND THROW IT IN THE TRASH EVERY DAY!  It's not that tough.  But people get lazy and you end up with products like this. 

Enjoy!