Hi! I am really indecisive about what type of litter box I want to do. My bun likes to go in both back corners so I am using my old rat cage for his litter box that is doubling as a shelf he can jump on. Currently I am not using any grate or screen because I can't decide which one I want to use. The grate where everything falls through or the screen type where only the urine goes through. I would like people's opinions on both of these types. Thanks! p.s. in case someone wants to see litter box I included a photo.