Actually, you do - just not to the same degree SF does. Yet.
https://ktla.com/2019/06/03/human-feces-other-filth-at-homeless-camps-lure-rats-to-l-a-city-hall-report-says/
I hear you.l. But the cit of SF gives out enormous numbers of needles ... hundreds of thousands per year. LA doesn’t give them out.