Dexter is being silly and I just wanted to know if anyone else had this problem and if there is anything I can do.  Dexter has 2 litter boxes, one inside his condo and one outside of it in his run/play area.  He had a small litter box from when he was little in his condo and I replaced it with a bigger one and he was fine with it.   He also has the same size (small) littler box outside which i just changed recently to a bigger box because he kept peeing over the edge.  For the last week of having it he won’t use it, he will just dig in it like crazy,  throw out all the litter and then just move it to the side to rip up the carpet where it was lol.  He has never did this before with the other big litter box that is in his condo so I don’t know what is going on here.  Funny thing is, is that I put his smaller one back and he just jumped in and used it right away.  I did clean the bigger new one before giving it to him too.  Any suggestions or thoughts?