Sorry, calm kiwi, but I think you’re being a little immature about this.
You must get your cats fixed. I understand there is a money situation, but there was a money situation when you got them, no? I find it hard not to tell you that you knew what you were getting yourself into. And now it’s been four years. Males are relatively inexpensive to fix. You’ve got to find a way to come up with the money.
Don’t get them fixed just because their ruining your wardrobe. You think it’s cruel to cut a cat’s testicles off? It’s cruel to subject outdoor males to the territorial fighting that goes on out there. It’s cruel to bring in unwanted kittens into this world. As far as I can recall (but I’m too damn tired to find a site), New Zealand might not have alot of problems with disease, but I think they have a pretty nasty problem with stray cats.
I love my cats as much as the next guy. But you’ve got to stop anthropomorphizing their behaviour. Cats do not think like humans do. Once kitty gets over the trauma of surgery, he’ll be fine without his testicles. He’ll be more content, with less of a desire to do all the things that he shouldn’t be doing as a domestic cat.
You can’t train them to spray outside. They are marking their territory. They live in your apartment. And, of course, as soon as one boy sprays, the other has to match it with his own scent. I hope you’re not too late. Perhaps fixing them will fix your problem. I hope you’ll do the right thing, here.
Otherwise, I expect there will be two new boy cats in the local New Zealand shelter, brought there by you. And, of course, the shelter will fix your cats finally. But nobody will want to adopt them as soon as they find out that they spray. So, in the end, they’d be put to sleep.
Sorry if I sound harsh, here. But I’m pretty passionate about giving pets the quality of life that they deserve. I hope it works out for you. I’m sure you love your cats and want the best for them.