Another Feline Pine user. I loved the box they had on their website although it was too small for Remy. I made one out of storage boxes for him. I used a hot glue gun to punch holes in it. The urine turns the pine into saw dust then it drops through. The poop is flushed. It never smells and i take it apart empty the saw dust and clean the saw dust holder part of the box. Only way to go if you can't stand cat smell...which i cant!