If you need to cut a hole in a Rubbermaid container, the best way to do it is with a sharp knife. First, make sure that the container is clean and dry. Next, use a ruler or measuring tape to mark where you want to cut the hole. Then, take a sharp knife and carefully cut along the line that you marked. Be sure to go slowly and be careful not to cut yourself. Once you have finished cutting the hole, you can use the container for whatever purpose you need it for.