Using these Nella squeeze bottles is a breeze. Simply open the wide mouth and fill it with your favorite condiment. Then, close the bottle and squeeze gently to dispense the condiment. When it comes to cleaning, you can safely put these bottles in the dishwasher. For best results, make sure to empty the bottles completely before cleaning. If you notice any residue, you can soak the bottles in warm, soapy water for a few minutes before washing. Store the bottles in a cool, dry place when not in use. Avoid exposing them to direct sunlight or extreme temperatures, as this may damage the plastic.