We recommend that you pack the debris in the dumpster in a way that best reduces wasted space. You cannot fill the dumpster past the top of the dumpster. We are required by law to cover the dumpster with a tarp before transporting it; if we are unable to, we reserve the right to offload anything we cannot transport and leave it on your property, or the right to leave the dumpster altogether and charge a trip charge. We will always let you know if we run into any situations like this.