Using your Cambro RFS6148 food storage container is a piece of cake. First, fill it with your leftovers, sauces, or sides. Make sure to use the compatible lid RFSC6148 for a tight seal that keeps food fresh and prevents spills. You can stack these containers when not in use to save space in your pantry or fridge. When it comes to cleaning, the container is dishwasher - safe. But if you prefer hand - washing, use mild soap and warm water. The rounded corners and coved lids make it easy to remove any food residue. Just a gentle scrub and it'll be clean. As for temperature, this container can handle both hot and cold food, but remember it can only withstand temperatures from - 40°F to 160°F (-40°C to 70°C). Don't expose it to extreme heat or cold outside of this range. And since it's NSF - certified, you know it's safe for food storage. Enjoy using your new food storage container!