Using these condiment containers is a piece of cake. First, open the twist-off lid and fill the container with your favorite condiment. Then, close the lid tightly. When you're ready to use it, just squeeze the bottle with the flip-top lid open. For easy storage, flatten and roll the bottles up. Remember to clean the containers regularly with mild soap and water to keep them in good condition. Always check the rewritable date bar to know when the condiment was filled. Don't use abrasive cleaners as they might damage the laminate. And that's all you need to know to make the most of your GSI condiment container set!