I guess it heavily depends on where you live. Where I live there are zero stray cats just wandering the streets. The shelter I got one of my cats from actually did have a ton of former strays, which really surprised me, but that shelter is smack dab in the middle of a pretty rural area and there you’ll have some. But definitely not in the cities.

Yeah, the only thing you gotta be careful with is wool, because that seriously shrinks like crazy with anything over 20°C. Everything else just goes on 30-40°C, good luck.