since I started using them I throw out next to no fruits and vegies. And I've used them for a varity of foods. the only one I have problems with are mushrooms. Sometimes they will keep for as long as two weeks!...other times they go bad after a few days. It seens to depend on how fresh they were to start with. Now you do need to keep the bags dry... so take take a paper towel to the inside of the bag perodically. and i find that putting the same food in the same bag..(when you reuse it)...helps. to help with this, and to make sure I get the most our of each bag...I take a marker to each new bag and put the date and food being stored...