To ask what to do about my cat...

[CobaltQueen]

He is 15 and adored by the neighbours. One in particular is besotted with him and he spends a LOT of time with her especially as she WFH.
Problem is, he now doesn't come home for days and I'm sure he is with her. Anyone else had this situation? I

my neighbour catnapped my cat. I spoke to them and asked them not to feed the cat or let them in. problem solved. Have you spoken to them?

He enjoys going into the neighbours big garden apparently. Can't stop him from doing that but the problem is, he is there all the time. Or at least somewhere. Don't want to accuse her as he doesn't have a tracker. He has in the past but it really bothered him each time so had to take it off.
He's never been an indoor cat and I can't stop him from going to her place but it is hurtful

Next time he comes home put a DO NOT FEED collar on him. Speak to the neighbours and ask/tell them not to let him in.

If you don’t like possible confrontation maybe fib and say he’s now on a special diet for XYZ condition and could get very sick if he eats anything else. Be vague about the ‘condition,’ - your cat, your business.

I can't be sure she let's him into the home, it's her garden he loves and I can't stop him going in there.
She said herself she doesn't feed him but he is staying out somewhere for nights on end but I can't prove it's her.

Next time he disappears go round there, say he's missing, ask if they've seen him. Give them a 'missing' poster to put in their window. If they're feeding him or providing a comfy bed, that might shame them into fessing up.

You have let this go on for too long and at this stage it might be too late to be honest. The first night the cat was missing you should have put posters up and asked neighbours. The cat and the neighbour now find it normal to be out for several days.

My neighbour started letting our cat into their house, feeding him and keeping him for hours. She would close her door so he couldn’t come home even if he wanted too. Once I saw that he was staying out and going missing for hours and figured out where he was going, I politely asked her to stop and she didn’t. I ended up asking politely on several occasions but she would lie and say she never lets him in…I can see it all from my window. I ended up threatening her that she will have the neighbour from hell if she didn’t stop and she finally did. She started doing it with another cat instead. Some people are cat thieves…they want the company without the responsibilities of paying for vet fees, neutering, etc.
I would go to your neighbour and say you are worried, etc. hopefully she will stop.