Why would you throw soiled diapers and wipes overboard? The ocean does not want your garbage. As for the custodians picking it up, that's disgusting! They are there to keep things clean, not pick up after you. Do you know how gross it is to pick up soiled items? What if your neighbor's dirty diapers/wipes blew onto your property? How would you feel to see it there?
Please be responsible and have some consideration for others around. No one exists just to pick after you. That's just plain lazy on your part and what are you teaching your child. Entitlement is not justified.