For ground beef, keep refrigerated and use within one to two days. It can stay in its original container if the packaging hasn’t been opened. Steaks follow the same protocol, but can last a bit longer at three to five days. It’s actually best to allow a little airflow with stored meat, as tightly-adhered plastic like Saran wrap can make meat sweat and, as a result, less tender. Meat can be transferred to plastic containers, but should be covered loosely.
Never refrigerate raw meat if it’s been sitting out beyond two hours.