Why isn’t it neglect?
When it come to hygiene there’s a term used by CPS workers called “marginal care”, under which things like messy hair, too-short pants, or even, perhaps, not bathing for a week, would fall.
So as long as it’s deemed to be “marginal care”, then it’s not neglect, which makes sense.
As for the not bathing, that might also depend on whether or not they were periodically sponging off or not, as at some point if you’re not cleaning certain areas, then indeed no bathing at all is neglect.
I don’t know why Bucks County, Pennsylvania, doesn’t consider this neglect. I think it is.