Reinforced Mushroom Grow Bags, 25 Count, Oyster Spawn and Grain Root Substrate Growing Kit with 0.2 Micron Filter”, Heavy Duty 3 Mil Polypropylene Plastic

There seems to be some confusion from a few of the reviewers that this is supposed to be a kit, and rated it poorly because they only received bags. The Title and description clearly state All in one grow bags, NOT a kit. If you actually read and pay attention to the listing and pictures, it's obvious that these are bags only. All in one is referring to the bags having a prepared filter port meaning they are ready to use without any additional alterations.Now with the confusion out of the way, on to the real review.The quality of the bags is much better than some of the other brands that I have tried. They are a little more expensive compared to some others at the $.998/ea cost that I paid, but I had zero failures in bag structure or performance and zero contamination. The 3 mil is very durable, seals easily and completely without leaking or tears when I use an impulse sealer. With this thickness they are easy to stand up and fill, I am never concerned or careful moving full bags around, or worrying about seams or punctures. I've even used a few of these bags more than once for grain spawn(something I had never even considered trying with other bags) just to see if I could, and they actually worked perfectly.The .2 micron filter patch has been perfect for contamination free fresh air exchange.Bottom line, if you are looking for a sturdy, well made reliable grow bag that can handle 5lbs (or more) of substrate this is an excellent choice.I will definitely be purchasing more in the future.

I bought these bags back 3 years ago around 2020 and just used the last of them. 0 failures in my presto pressure canner. Nice thick and durable bags

This product is exactly what you want it to be. Sturdy and durable, these bags will not disappoint you. I inoculated about 6 bags before I moved to another state, and was terribly worried I’d lose my grow. Before I left for the new crib, I brought 3 bags that had colonized. I inoculated them in February, and these bags of spawn went with me to an apartment, to a hotel, to my new place. FOR 8 MONTHS THESE BAGS WERE GOING WITH ME FROM PLACE TO PLACE AND ALL 3 WERE NOT CONTAMINATED OR LOSING MOMENTUM AT ALL!!!!! WHAT?!?! I was POSITIVE these bags would contaminate, but I just put them all to sun today, and all 3 of 3 smelled and looked fantastic. These bags are amazing!!

They worked well. They withstood 15 psi. Only problem was that 2 of them open once they were sealed

Great bags if you're on a budget! I at first gave a 1 star for my grow bags melting in my pressure cooker. Found out 1, add extra water to prevent that, 2 lower the temp once you reach 15 psi and 3 line your pressure cooker with aluminum foil. Even my unicorn bags melted on me, so these bags are great and I was able to grow these beauties!

Absolutely amazing! These bags are the perfect size for making any kind of spawn, tons of room but still a good compact size. Bags are thick and definitely wont burst or tear easily. One bag holds enough spawn to easily make a whole monotub or alot more spawn. Definitely worth the money for anyone moving into bulk!

Works for most part but can't be heat seem sealed tried three times and each time it melted instead of just fusing but had no issues in the pressure cooker

Stood up to a pressure cooker with no significant ill effects. The plastic does get a bit stiffer and slightly brittle, but no leaks or cracking noted. I wouldn't recommend using them a second time however. I have a food saver which works great for sealing before sterilization (not vacuum sealing). My initial grow of Oyster mycelium is doing excellently after 3 weeks. No signs of contamination.