My 6 month old kitten Guinness eats the litter everytime I put a bit more in to fill what has been removed. I use Worlds Best, which is a clumping corn litter. The nice corn smell attracts him I guess. After the fresh corn smell is gone he doesn't do it anymore. So I'm not bothered about him injesting the corn but what about the bacteria in the litter that was not replaced? He has had chronic diarrhea for a long time and everytime I get his stool checked there is a huge excess of bacteria. He is on anti-bacterial medicine right now (again). Could him eating the litter be causing this???? If so, what litter do you suggest I switch to that he won't eat. I really like worlds best because its is clumping and flushable. Thanks for any help!!!!