So they should be paid better, and the burden spread among the constituents of those services. Not pinned on landlords.
Much better overall if the increased cost merely gets reflected in a rise in wages for unskilled labour in the city. If indeed it ever is an actual problem which I don't believe it is.
I mean, hell. It would even be an improvement to just levy a tax on all landlords to pay for a housing stipend for public workers. That way it's evenly spread among landlords instead of just the ones unlucky enough to have ultra-tenacious tenants.