We have a young cat (nearly 5 months) that we got from the cat rescue when she was 6 weeks old - not ideal, but her mother was dead. She was house trained when we got her and all was fine until we changed her food from baby cat food to kitten food. She got diarrea and started pooing outside the litter tray. We have now found a type of food that doesn't give her the runs, but the pooing on the floor continues.
She pees in the litter tray and then poos somewhere else, often right next to the litter tray or under the kitchen table.
Her stomach has been OK for about 2 weeks now. How do we get her to poo in the litter tray again.
(We also have 2 other cats - 5, 5 months that get s on well with the little one and 1,5 years that hates both the younger ones)