If you stand from the customer's point of view, in this public place, and your restaurant toilet is in disrepair for a long time, the sanitary ware must be dirty. If it were you, would you be happy to press the flush switch?
Therefore, if you are a restaurant owner, it is best to suggest that the boss change to pedal or infrared automatic.
Of course, people's quality is crucial, but quality alone can't solve the problem, can it? I'm thinking of you, too.