Thanks for all the sensible ideas
Just to mention, there is no way our cat is unloved.
As all cat owners know, some cats are indoor cats, others like to get out and about.
When we got our's at 6 months old he'd never been outside and was so desperate to get out there.
When he's in our house he gets all the attention and fuss he wants - he's a year old now but still very playful.
The only reason he's visiting home number two is because he can get more food.
We give him plenty, he certainly isn't a starving cat and he's also hunted a few times - I know he's had rats, mice and blackbirds.
It's all down to this woman first letting him in and then feeding him - he'll leave our house in a morning after a good feed, of course he won't turn down even more food if someone is going to give it to him!
I may well try the "Our cat is on a special diet - do you want the death of this cat on your hands?" conversation if this carries on.
Oh and I've got upmost respsect for you dog people.
I would have one if I could.
However me and the wife working - sending a cat out on his own for most of the day is not (usually) a problem.
They have a territory to patrol and they will find plenty to do.
It simply wouldn't be fair for us to have a dog and expect him to be on his own for most days - not fair at all.