The former owner in this instnce was my Fianceé’s grandmother, and I know for a fact that she was a draino fiend. Sweet sweet lady, but I definitely had some not-so-nice mutterings about her after the 3rd pipe crumbled under my channel-lock pliers during repair. And whoever welded a dwv fitting onto the wall stub (which I know wasn’t her) has a special layer of hell waiting for them.
Only if you bring your own TP. I have a bidet, so you’ll leave clean, but soggy.