Using these bags is a breeze. Just open the drawcord, put your stuff inside, and pull the cord to close. For food, put your snacks or meal packets in the 'Food' bag. Use the 'Clothing (clean)' bag for your fresh clothes and 'Clothing (wash me)' for dirty laundry. The 'Rubbish' bag is for all your trash. And the 'Bag no. 5' can hold anything you want! When it comes to maintenance, if the bags get dirty, just wipe them down with a damp cloth. Store them in a dry place when not in use. Remember, these bags aren't waterproof underwater, so don't submerge them. Avoid sharp objects that could tear the material. With proper use and care, these bags will serve you well on many outdoor trips.