Mylar bags for anything long-term, jars for anything you open weekly, buckets as an outer layer where rodents are a risk. The three are not competing — they solve different problems, and most owners end up using all three.
The three options compared
| Mylar bags | Glass jars | Buckets | |
|---|---|---|---|
| Light blocking | Complete | None unless stored dark | Complete |
| Oxygen barrier | Excellent | Excellent if the lid seals | Poor on its own |
| Puncture risk | Low at 7 mil | None | None |
| Breakage risk | None | Real | None |
| Space efficiency | Excellent | Poor | Moderate |
| Reopenable | No (or zipper) | Yes | Yes |
| Cost per litre | Lowest | Highest | Low |
| Rodent proof | No | Yes | Yes |
Mylar: the default
For anything you are storing for years, 7 mil mylar with a sized absorber is the answer. It is the cheapest per litre, the most space-efficient, blocks light completely and needs no special handling. The only real drawback is that opening one commits you to using the contents.
Jars: for the working pantry
Glass is the right choice for food you are actually eating: herbs, snacks, anything you open weekly. A mason jar with a good lid and a 300cc absorber holds oxygen out perfectly well, and you can see what is in it, which matters more than people expect for food you use daily.
Two caveats. Glass breaks, so it is a bad choice for anywhere it might be knocked or for earthquake country. And glass lets light through, so jars need to live in a cupboard rather than on a sunny shelf — light degrades the food regardless of how well the lid seals.
Buckets: an outer layer, not a container
A food-grade bucket on its own is a poor oxygen barrier — the plastic is permeable over years and the lid seal is not airtight enough for decades. What buckets are excellent at is protecting mylar bags from rodents, crushing and handling damage.
The standard approach is a 5-gallon mylar liner inside a food-grade bucket: the mylar does the sealing, the bucket does the protecting. That combination is the best long-term storage available to a home user and it is what we would use for staples.
What to avoid
- Zip-lock food bags. Not an oxygen barrier, not light-blocking, not durable. Fine for a week.
- Non food-grade buckets. Industrial buckets can leach. If it does not say food grade, do not.
- Vacuum-sealed clear bags for long storage — clear film plus residual oxygen is the worst of both worlds.
- Original packaging. Whatever the food came in was designed for months on a shelf, not decades.
The combination most owners land on
7 mil mylar bags for everything, gallon size as the default, inside buckets for the staples that live on a garage floor, plus a handful of jars in the kitchen for what is in daily use. That covers every case without over-thinking it.