about once a week 2yo cat will crap outside of litter box. 2 liter boxes changed every day. Only one cat in home, no other pets. No medical issues per vet. It has never peed outside of liter box. please help, very frustrated. I've tried moving the liter boxes, wash them out 1x a week, scolding, praising when she does it right.... contemplating returning her to the shelter.. I have had her 9 months and the behavior has not changed. Otherwise a great cat.