Hi-hoping someone has some good advice for me. I brought home a 9 week old male kitten (L) to introduce to my 19 year old male (B) and 2 year old female (M). I had introduced the female to my older cat a year and a half ago, and that went quite well after 3 weeks of slow introduction. Truthfully, I was more worried about my 19 year old and the kitten. I figured the 2 year old would adjust quickly and love having someone to play with-just goes to show how strange cats can be! My older cat adjusted quickly after 2 weeks, and he and the kitten are getting along great! My 2 year old (M) quickly forgot that she had been in the same boat just a year and a half ago, and is not doing as well! I started off "scent swapping" from day 1, and that went fine. From there, I moved to swapping them out to check out each others' living areas. Then, I allowed them to view one another (only 1 resident cat at a time) through a glass door. I also brought L in in his carrier, and allowed the resident cats to sniff him. M hissed at the kitten and tried to swat whenever kitten was in the carrier-even if I covered it with a towel. A few times, she jumped up on top of the carrier-maybe a sign of dominance? Eventually, after a few weeks of this, I allowed them to meet, and M promptly chased after the kitten. The kitten would either run away and hide under the couch or become submissive (roll over). I thought things were going relatively well though b/c M never tried to hurt kitten. However, last night, I discovered that the kitten had been peeing and pooping in the laundry basket in the bathroom where he has his box. Based on what was in there, I think that this was a new development, though I can't be certain. He was also using his box as well. I do really think that M was stressing him out with all the chasing b/c I have also found him hanging out in the litter box a couple of times and have read that cats might do that when overwhelmed/stressed. So, I removed the laundry basked, and the kitten has been using his box. I also stopped any face to face interaction between the two and have only allowed them to view each other through the glass door that closes off my kitchen. I swap them back and forth all day, and M rarely leaves the door when the kitten is running around. She is definitely curious about him and wants to be in the room with him. My question is...is there anything more I should be doing? I guess I wrongly assumed the 2 year old would adapt very quickly, but I'm thinking she is just going to need a lot more time. I have also done some interactive play with the 2 of them when they were together-taking turns with the yarn on the wand, and that went well. There was also one instance where they were both sleeping in the same room (one on the bed, one on the chair) when I was in the room. I can't feed them on other sides of the door b/c the 2 year old is very non-motivated by food and eats very inconsistently. I guess I could try some treats though. I plan to eventually try face to face with 2 of us each holding one cat on our lap a few feet apart, though it's tough to hold the 2 year old for long! If anyone has suggestions, I'd appreciate it!