I have Bluestone interior floors in new construction. Ready to finish but slight paint overspray and several glue spots. Is there a problem using a diluted muriatic acid to clean?
Muriatic could be a bit harsh, causing a 'bleached' spot. Many natural stones are sensitive to acids, most being alkaline (from types of limestone).
A "citrus" paint stripper could be less harsh, but it is acidic, also.
I would use ammonia and a soft nylon hand brush, alternating after rinses with a mild detergent.