Hi Mitts & Tess! I'm in the UK, I'm not part of a TNR group but I do TNK (trap, neuter, keep)

well, I have converted my garage into a cat house, though they do wonder in and out of my house too (have to do the garage thing as my house isn't big enough to house the number of cats that I take on so I ended up converting the garage). It works well though and I spend most of the day with them in the garage anyway! There aren't many strays in my area now as far as I know, I've been doing this since the late 90s and it seems to be under some control now, though I do get the odd stray still (like the one that gave birth about 5 weeks ago).
Re the doggy dish, looks great! So cute seeing cats share their food, most of mine are quite happy to share although the odd one gets a bit catty over food

they are fed exclusively wet as I think it's better for their health.