None of the packs worked, it was bad enough they forgot to send them and then when i complained they sent them out, they showed up 3 weeks late, to top it off none of them worked, i’ve used O2 absorbers for years from other company's with no problems and this is the first time from amazon/packfreshUSA, never again, what a pain in the ass, now i need to reopen and start over.

I purchased these for removal of oxygen in long term food storage in Mylar bags. Having them broken down in 10 packs helps in the longevity of the product.

I usually make about 15 pounds of jerky at one time and without these they tend to go bad, second time I’ve used these and they are great!

These work like they're supposed to! Easy to use, love that they're packed in groups of 10 to help cut down on waste and worked like a charm. Will buy again when I need to.

I have just started increasing my storage of dry goods and these work great in the bigger gallon size mylar bags and in my buckets. If you are new to using these please read the instruction or watch a YouTube video.

PackFresh sends along the most helpful info with their products and explain common questions regarding oxygen absorbers and long term good storage. I REALLY appreciate their thoroughness and their products are solid!

I'm in the process of packaging flour, bisquick and cornmeal for long term storage in Mylar bag 1 gallon bags. These items contain a lot more air than rice, beans, pepper corns and therefore require a larger oxygen absorber than normally used in a one gallon bag, i.e., a 300cc packet. The 500 cc packet is just the ticket. 100 packets may seem like a lot but they are package in lots of 10 each, Use as many as you need. The remainder will stay fresh. I'm hoping to extend the self life of these…