Neighbours cat keeps killing things in our garden

[girlmama32]

Basically as the title says our neighbours cat keeps killing things for fun in our garden and leaving them there and it's becoming a joke, this week alone it has been 3 squirrels and 1 bird.
I understand it's natural for cats to hunt but this seems extreme.
What can I do to deter it? We have one of those high pitched sound machines but it just seems to ignore it.
I've spoken to neighbours who have don't see an issue, obviously they aren't having to clear up dead animals almost daily...
I've asked them to put a bell collar on to at least give the animals a chance but I was told "it's a waste of money, she loses them every time she's out and we're not spending money replacing it every week".
What do i do!?

Wow your neighbours sound charming! (Not 🙄) I may get flamed for this suggestion but I'd toss them into your neighbours garden its their cat so its for them to clean up after it! I'm sure they'd soon buy a collar with a bell on when they're the ones having to deal with the dead animals accumulating in their garden.

Failing that could you put a sprinkler in your garden? The cat would soon stop doing that in your garden since they hate water and run a mile from it and if the neighbours complain tough tits as the saying goes, it's not your pet so you shouldn't have to deal with the clean up of dead animals it kills and I'm a crazy cat lady btw but I'd pretty pissed off if I had to constantly clean up dead animals for a pet that wasn't my own and if I was your neighbour I'd be doing everything as humanly as possible to prevent my cats doing that and I'd be coming to clean up the dead animals in your garden as well. Your neighbours sound like utter dickheads and should realise if you can't take responsibility for your pets you shouldn't have them in the first place! Hope my suggestions helped OP