Long story short we moved in a few months ago.
We have a cat aged 3 who we rescued, he always has been a little ferrel and not the type of cat to come home every night etc.
we also have an elderly cat who lives indoors and very rarely ventures out.
We've never been allowed a cat flap before ( renting ) so if he wasn't home by the time we went to sleep he stayed out.
At this house we have one so it's left open all the time, on a latch so if he comes in he can't get back out at night.
Within a few weeks the neighbour knocked and complained the cat was going in their house at night, to sleep, eat and was upsetting their cats.
I apologised, bought them chocolates and have made every effort to ensure by evening he is locked in evening though he spends hours crying at the back door or by the cat flap, so loud it wakes the children from time to time to avoid any conflict with the neighbour.
I did explain in the day I would be letting him out so there isn't much I can do about him coming in during the day and they said it was the night time that was the problem.
No issues since as far as I knew but this morning I bumped into the neighbours outside and the man ( he was the one who initially knocked ) said it's getting ridiculous, that one night last week he found him alseep on his sofa ( this night we had tried and failed to get him to come home, we had tried until 1am with all sorts of treats etc but he just wouldn't come back ) and then went on to say that he also ate cooked sausages that were left on the side in the daytime yesterday.
I did ask why he doesn't lock his cat flap at night since he made it clear his cats don't go out at night but he replied that they aren't going back to litter trays and I should think of a suitable solution.
I said I'm not sure what else I can physically do and he replied that in all the years he has lived here he has never had this and he shouldn't have to fork out for an electronic cat flap to suit us and that our cat shouldn't be living in a cul de sac but on a farm.
I have a 5 year old son who loves the cat otherwise I would consider re homing but I don't know what to do :(