Anyone who has used these foodsaver bags knows what you are talking about - I use them for bagging/freezing venison as I process it. Bags either seal well - or they develop leaks - and usually, the leak is evident within a week, even in the freezer. I figure that is why the original poster suggested double-bagging. That’s probably also one reason for the desiccant and 0xygen absorber being included.
Precisely.
The author is quite experienced with cosmoline (hates it) and food bags. In fact the author only buy$ Food Saver brand bag$, despite the cost, due to seal failures with others.