I have three children, one of which is only 4 months old, and our older cat is using the house as a toilet. I can't cope! It started in the snowy weather but now that's weeks ago and she still does it. I've tried shutting all the internal doors so she won't use one of her two 'usual' spots for a quiet poo. But we've just been out and I forgot to shut one door and guess what? There's a poo! Any suggestions? She's had some antibiotics from the vet in case she had a tummy infection but her poos are normal so I'm guessing this is not the problem. She doesn't seem particularly 'senial' (another suggestion). She's sixteen. She runs and jumps as much as ever so I don't think it is that she doesn't like using the cat flap due to dodgy joints and I've seen her out in the garden a few times. We do have a big black cat that sometimes chases our cats through the catflap but he's been doing it for 2 years and this problem has only recently started up.
Help!!!! I am desperate as I can't cope with another pooing creature in the house!