Baby changing facilities

Please inform the parents of your grandchildren and anyone using public toilets to change the babies' nappy, of the following I recently read. Most of the changing facilities for babies (the plastic pull down tray - hope you know what I mean) are in either a special baby change facility room or in the disabled toilets, many of which are accessible to anyone. I recently read that some cocaine users are using these to 'run lines' of cocaine down them before snorting the cocaine.
Please be careful to check. Anyone as horrified as I am to learn this.