A lot of people born overseas put their used toilet paper into the trash can. I'm guessing that in their countries, the plumbing isn't powerful enough to carry it away, so that's what they do. It still grosses me out when I see it in one of the stores.

A lot of the Arabs where I inspect, mostly Yemeni, with some Palestinian, don't even use toilet paper. They keep a small cup or bucket or something and fill it with water to splash the shit away. I never touch anything like that. If it is sitting in the sink blocking the faucet, I have someone else move it before I check to see whether they have hot and cold running water.