All materials must be inside the container, nothing over the top of the container. By law we are required to tarp each load for transport. Heavy materials such as dirt, rock, concrete, brick, sod asphalt should not fill the container over 2/3 full. Biggest box for heavy material we can use is a 20-yard. All materials that exceed the top of the container must be removed. We cannot pick up a container that is over full. You will be responsible for removing excess and a return trip fee will be charged to return and pick up the container.