Okay, I have an adult cat about 13 yrs old and 3 weeks ago I received my replacement kitten. He came with a bonus, his half sister who is a week or 2 younger than him. Jingles (the boy) had his kitten shots and was dewormed but snow because she was younger had not been wormed or had shots. My adult cat had a huge appetite normal stools until the babies arrived. The babies had extremely soft stools which I attributed to the stress of their new environment. They were on an excellent kitten food which the old lady promptly started gobbling up. Since isolating wasn't an option we incorporated her food with the kitten food hoping to transition the kittens to her food. When the little ones continued to have trouble and the little girl developed really bad diarrhea, literally leaking from her bottom. I took her to the vet and with a fecal test it was determined she had either Gardia or the other infestation of "T" can't remember the name. The vet put her and her bro on antibiotics for a week and although she's got a really sore bottom the diarrhea is now really soft stool again. The old lady seems to be experiencing soft stool as well and I'm wondering if it's still a stress issue, I'm feeding them all a ID Science diet from the vet but I'm hoping I can get their stools formed so I can reintroduce a good combo of dry and wet food. Any thoughts out there are appreciated. I still need to get the little girls baby shots.