There's an office building with regular water flush toilets. There's a trash bin next to each toilet seat so that if users have any garbage they would not flush it into the toilet because the toilet and sewer pipes it's connected to might get clogged.
Then there's toilet paper which is carefully selected such that it disintegrates quickly when it gets into water and so it can be safely flushed into a toilet and not clog it. This has been tested and it's okay. The building owner is okay with this and the city utility company was also contacted and it's okay with this arrangement, their sewage processing equipment deals with proper toilet paper just fine.
Then there're signs saying something like Folks, it's okay to flush toilet paper into the toilet. Please drop all other trash into the bin (in a language other than English, so no chance to have an exact quote).
And of course there're users. Some of then flush the paper into the toilet and others throw it into the bins. Bins get full rather quickly. This requires the person cleaning the toilet floor to also empty the bins several times per day and move the dirty paper together with other trash. That's extra work and extra garbage and a person moving dirty toilet paper around the office every day.
Removing the bins is out of the question because users will definitely throw trash into toilets. What's needed is to keep the bins and also prevent users from throwing toilet paper into the bins.
Is any redesign of trash bins possible to address the problem?