The bargain bags I got last were worthless. They look fine, but days later they have lost vacuum. I'm having the same problem with everything I used those bags for, meat, dried fruit, etc. Because they are so slooow to lose vacuum you've long since put stuff away thinking you had a good seal. If this continues to be an issue I may just start painting my cheeses with cheese cream after a week or two in the cave. I won't be able to eat the rind, but that's better than stinky rinds!