I have 2 of them with feature...don't waste your money on the feature..meat juice still gets sucked up into the sealing tray..
What I do to prevent this is I buy a box of Food Storage and Bread Bags ( the Safeway brand) they do not have pinch or zippers on them, but use zip ties, which I don't use.. I just bag whatever I plan on using the food saver on, and twist the bag, and fold the top over the bottom, then put it in a food saver bag and seal.