While passengers urinating on seat opponents doesn’t happen frequently compared to the number of flights and number of passengers each year, it happens frequently enough to make me wonder whether an airline would attract business by requiring passengers to certify that they’re potty trained, and to blow into a breathalyzer at the boarding gate. And it makes me wonder if airlines not doing this suggests they’d rather have the ticket revenue than discourage the behavior.
For fee-happy airlines like Spirit, Allegiant and United another approach could be onboard sale of Depends.