Renting a dumpster is a relatively easy and straightforward process. However, there are some mistakes that you can make with the rental process if you are not careful. Knowing what these mistakes are will help you to avoid them. Mistake #1: Not Going Big Enough One of the most classic dumpster rental mistakes that most people make is not going big enough. When you rent a dumpster, let the dumpster rental company know about the scope of your project, then go with the largest size they recommend for your project.