Hygiene is a factor that many people struggle with when it comes to any portable toilet. The best thing to do here is to keep this in mind while shopping. The ones with cavities in the door or the side can hold an anti-bacterial spray and tissues that you can stock up. You can also put a note to wipe the eat after every use. People will be happy to do it if the products are available at hand reach. If you don’t see this happening, then appointing people to help sanitise every couple of hours is needed.