Serious cat dilemma

Thanks for your responses. They're pretty much exactly what I've been thinking. The peeing has really increased over time. It almost seems habitual now. He does go outside. There are other cats locally but they seem to be his pals. No problem with them. The vet could only suggest a prolonged CBT style reintroduction but that's just not practical in a busy household with several entrances and exits.
Feliway has been mentioned but we've never had any luck with it. I had a Feliway dispenser thing when introducing two previous cats. Didn't make any difference apart from a greasy spray up the wall.
I thought some of you might suggest that I take him but if he's so stressed by one small female cat I doubt he'd cope with our two giant Maine Coons.
I think rehoming would be best. Poor DD she really loves him but this situation is getting worse. Thanks for your thoughts.

Has this situation been since the kitten moved in 2 years ago or has it just started?

The problem is that cat 1 loathes cat 2 and is now peeing all over the place. Nowhere is safe. He pees on beds, piles of clean washing etc.

Has he just started doing this or has it been ongoing for two years?

If it's a recent development then perhaps it is nothing to do with the other cat.
Perhaps he has a kidney infection? I'd ask for a second opinion from another vet first.

Crossed posts Glorianny

Just as an afterthought: your daughter has had the second cat for two years now and the peeing / territorial marking with Cat 1 is a recent thing? More likely that something else is at play here in addition to no.1 cat's dislike of the other.

Why has it taken two years for this to happen? Did your vet check him over properly the older cat might be ill www.catchat.org/index.php/cat-toilet-spray-indoors?

Have they both been neutered?

Cat 1 spraying all over the place makes me think he hasn’t been castrated even if cat 2 has been spayed.

Killing him is unthinkable as is making him live alone in the laundry room, how cruel
Find the new one a new home The boy was there first and is devoted to your daughter it’s very unfair to think of getting rid of him because a better one has come along !
This hasn’t been thought through at all

Are they inside cats?

With inside cats I would get more litter trays and that would usually resolve the problem as they will not want to share

I'm assuming the male is neutered?

If he just wants to mark his territory, that's normal cat behaviour with an intruder cat

Otherwise it could be anxiety in which case, something to ease anxiety like feliway would help

Also, lots of rewards for being close to new cat. Associate new cat with positive additions to the "colony"

I agree with Callistemon that advice from a specialist in cat behaviour would be really helpful in finding the right outcome. I have used one in the past with a complex situation and it was money well spent. Feel free to PM me if you would like a recommendation.

I don't have cats at the moment though I have in the past .
I've not had a problem as described .
Cat loving friends use Feliway products bought from Amazon to solve behavioural problems .

Worth a try ?

Otherwise , I'd give one of the cats away .

Have they tried using Feliway? www.feliway.co.uk/ Before doing anything else they could try this.

PTS a healthy animal would be an appalling thing to do and I hope no vet would countenance that. Rehoming one of the cats sounds like the best solution if the situation is irretrievable.

Hopefully vets wouldnt pts a healthy cat. A new home should be sought for one of the cats. A ragdoll will not be difficult to rehome. Cats are quite longlived - our cats all made 16+ and some lived until their early 20s.

Is he peeing because he is distressed or is he spraying and marking his territory, warning her not to go near anywhere that he thinks belongs to your DD?

I'm not used to cats and not that keen on them, in fact, but couldn't euthanise a healthy animal.

Can you contact an animal psychologist?

Otherwise, one would have to be rehomed I think.

Euthanising in this situation is cruel. The poor cat was there first and it was happy. They need to find a nice home where it can be the only cat or rehome the second cat.