I have never seen or heard of that happening. My brother goes to an Ivy on a fully need based scholarship

At Harvard at least, there is a "dorm crew", comprised mostly of poorer students meeting their term-time work requirements that come with finaid, that is responsible for cleaning the in-suite bathrooms.

I think I recall recently reading that some schools might have finally eliminated the requirement (maybe, Yale?) but I'm not sure. It was definitely the case at Harvard as of ~March 2020. (but probably not for this year for obvious reasons!)

Yale has a `student income contribution`, where students on finanical aid are expected to work in some term-time jobs. However these jobs are virtually all administrative (doing paperwork, making calls, etc.), research or teaching assistant-ships. I have not heard of poorer students doing any cleaning.

Here's a brief article on the practice https://www.thecrimson.com/article/2019/4/8/dorm-crew-tweets...