I've found myself using the snack, sandwich, and original size/medium upright bags non-stop. There are multiple in my fridge, freezer, or pantry at any time. Perfect for holding produce (fruit or veggie, cut or not), pancakes, cookies, muffins, and smoothie prep. I've never had an issue with odor or staining, even if I forgot about the produce a little too long. I hand wash and hang dry and they're like new. I'm definitely addicted to Stasher for life!