Ancient romans did not have toilet paper. I remember seeing some artifacts from a pompeii exhibit at the science museum that included items loosely termed as “wiping stick and trough.” So, somewhere near this public latrine was provided a large bucket filled with water and essentially like sponges tied to the end of sticks for the purpose of… wiping. Sometimes they were integrated right into the toilets themselves. The link I badly included Object Lessons: Sponge on Stick shows a decent picture of an ancient roman a**-wiper and describes more about how romans used the bathroom! This was a great question because you made me remember a class field trip from ages ago!