The best thing to do with garbage is burn it. Just make a fire out in your yard. In doing this you may be violating some fire codes, but then again, everybody is going to have the same problem. If any flies have laid eggs in the garbage, a hot fire will destroy them. Burning is a really good way to get rid of garbage, and what won't burn, you should bury.
Garbage is another good reason to get out of the city in a crisis.
It will be like cities that have had garbage worker strikes. Trash piles up, the domestic animals get in it and spread it all over, and then rats get to be a problem, and that means disease. Such a life-threatening situation needs to be avoided. If you think garbage collection could be a problem, then I would say you should seriously have a contingency plan to move out of the city. The next important system for the travel trailer is heating.