Too Many Spam/Unrelated/Nsfw/Whatever posts in Sub. Suggest Rules

So, been removing posts and comments being reported for xyz reasons but sub with 80K and growing members isn't easy to monitor. There are Rules but many are manupulating them. So people of tricity, suggest what should be rules nd what should be limits. Dating, Looking for Friend etc posts : Allowed ? Limit or Ban Random Food/Area pics ; Limit or Remove ? suggestions are welcome. PS: mods aren't full time subManagers. It's not a job but volunteering (trying to keep sub sensible).