Mycologysimplified
12qt Shoebox Refill Kit - Your Shortcut to Mushroom Success!
When you're gearing up for your next round of mushroom cultivation, we've got you covered with our 12qt Shoebox Refill Kit. It's your key to a quick and hassle-free refill that ensures your mushroom-growing journey continues without a hitch.
What's Included:
- 2 lbs of Sterile Corn or Milo in a 4T Unicorn bag
- 5 lbs of Substrate
- Free Injection Port
Customize Your Kit: Simply select your preferred grain type and substrate below, and you'll be all set to embark on your mushroom-growing adventure.
Why Choose Our Refill Kit:
- Sterile Excellence: Our sterile corn or milo is thoughtfully packaged in a 4T Unicorn bag, ensuring a contamination-free start to your cultivation.
- Premium Substrate: You'll receive a generous 5 lbs of top-quality substrate, providing the perfect foundation for your mushroom cultures to flourish.
- Free Injection Port: We're all about convenience. Each kit includes a free injection port to streamline your inoculation process.
Don't let your mushroom cultivation journey be complicated. With our 12qt Shoebox Refill Kit, you're just a few clicks away from continuing your mycological adventure. Get ready to grow, and let's make your next round a resounding success!
*Legal Disclaimer: We assume no responsibility for your usage of the product. Sales are final, and any product concerns will be addressed on a case-by-case basis.
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![12qt Shoebox Refill Kit | Mushroom Substrate and Grain](http://mycologysimplified.com/cdn/shop/files/MiloKit_66cd46e6-765b-470b-9f64-94638e67b4c2.jpg?v=1714315065&width=1445)
![12qt Shoebox Refill Kit | Mushroom Substrate and Grain](http://mycologysimplified.com/cdn/shop/files/CornKit_3b434a18-cbfb-4501-85bb-a3d699f552d3.jpg?v=1714315065&width=1445)
![12qt Shoebox Refill Kit | Mushroom Substrate and Grain - Mycologysimplified](http://mycologysimplified.com/cdn/shop/files/27PM.jpg?v=1714315065&width=1445)
New Expected Lead Times
- Agar - 1-4 days from pour to out the door!
- GrainSpawn - 1-3 days from autoclave to shipping.
- Substrates - 1-2 days depending on total volume. Orders of 150lbs + may need 1-2 extra days.
- Inexpensive Drop-Shipped items - 12-30 days.
Recommended Add-Ons
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Test You Autoclave or PC
Go NowEnsure your autoclave or pressure cooker works effectively with these handy test strips. Just insert them into the item being sterilized, interpret after the pressure cycle to confirm sterility. They measure time, temperature, and steam presence, crucial for assessing sterilization efficacy.
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Grab Some Substrate
Go NowEnhance the growth of your grains by pairing them with a reliable substrate. Whether you require CVG, Amended CVA, or a Gourmet Blend, we've got you covered! Our diverse range of substrates ensures that you can find the perfect match for your specific needs and preferences.
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Micropore Tape
Go NowMicropore tape is a staple in mushroom cultivation, applied on tubs or bags to facilitate gas exchange while effectively shielding against airborne contaminants. This microporous barrier allows for the essential exchange of oxygen and carbon dioxide, for optimal mushroom growth.
Top Sellers
See what others are adding to their carts!
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3lb Millet Sterile Mushroom Grain Spawn
Vendor:Mycology Simplified4.88 / 5.0
(43) 43 total reviews
Regular price $10.99Regular priceUnit price / per$15.00Sale price $10.99Sold out -
Not So Simple Mushroom Substrate
Vendor:Mycologysimplified4.98 / 5.0
(44) 44 total reviews
Regular price From $10.00Regular priceUnit price / per -
3lb Milo / Sorghum Mushroom Grain Spawn Sterile
Vendor:Mycology Simplified4.91 / 5.0
(44) 44 total reviews
Regular price $10.00Regular priceUnit price / per$12.00Sale price $10.00Sale -
Drippy Corn Mushroom Grain Spawn
Vendor:Mycologysimplified4.84 / 5.0
(31) 31 total reviews
Regular price $10.00Regular priceUnit price / per$12.00Sale price $10.00Sale
Let customers speak for us
from 447 reviews![Drippy Corn Mushroom Grain Spawn](https://cdn.shopify.com/s/files/1/0653/1524/2206/products/Drippy_498x498.jpg?v=1672969818)
I was able to get these bags going without any issues. I was frustrated with purchases from another vendor and gave these a shot instead. No regrets. Within two weeks, the bags were a nice healthy white!
![MYA Agar With Carbon](https://cdn.shopify.com/s/files/1/0653/1524/2206/files/Carbon_498x498.jpg?v=1685559697)
I love how clean it is 🙌
![Sorghum Yeast Agar (SYA)](https://cdn.shopify.com/s/files/1/0653/1524/2206/files/Sorghum_498x498.jpg?v=1694557763)
Excellent product , highly recommend.
![Not So Simple Mushroom Substrate](https://cdn.shopify.com/s/files/1/0653/1524/2206/files/vecteezy_nebula-and-galaxies-in-space-abstract-cosmos-background-ai_29131278copy_498x498.webp?v=1718368773)
Always fast delivery and have never had any issues with their products except for once.. I had a grain bag arrive with an injection port but no filter up to to breathe through . Other than that I love this place
![Not So Simple Mushroom Substrate](https://cdn.shopify.com/s/files/1/0653/1524/2206/files/vecteezy_nebula-and-galaxies-in-space-abstract-cosmos-background-ai_29131278copy_498x498.webp?v=1718368773)
Keep on the path
![Pre-Mixed Agar Powder](https://cdn.shopify.com/s/files/1/0653/1524/2206/files/2_9ddc0aef-0984-4262-8873-65b221a6c19e_498x498.jpg?v=1690645108)
Until I have an issue I can only say that the quality and consistency in their products is why I recommend once past the beginner learning phase.
![3LB Corn Mushroom Grain Spawn](https://cdn.shopify.com/s/files/1/0653/1524/2206/files/Corn_498x498.jpg?v=1698442444)
This company excels at packing their products. Living in Hawaii, where items often shift during transport, I appreciate how well they package their grain and substrate. I never have issues, so I'll be purchasing all my grain and substrate from Mycology Simplified. I love the stickers.
![2 x 3lb (6lbs)MUSHROOM MILO SORGHUM STERILE GRAIN BAG](https://cdn.shopify.com/s/files/1/0653/1524/2206/files/2for18_498x498.webp?v=1715266111)
I wanted to try something new other than BR and drippy 🌽. I was shocked to see the mycelium growth after a few days I was expecting at least a week. I really love the packaging as it came in double sealed perfectly. Super sterilize and I didn't have to worry about buying a pressure cooker
![MYA Agar With Carbon](https://cdn.shopify.com/s/files/1/0653/1524/2206/files/Carbon_498x498.jpg?v=1685559697)
I love the black contrast I'm able to see growth a lot sooner than squinting. Also is way more shelf stable in my AZ heat than a nutritional yeast I had purchased
![Drippy Corn Mushroom Grain Spawn](https://cdn.shopify.com/s/files/1/0653/1524/2206/products/Drippy_498x498.jpg?v=1672969818)
Super reactive to the mycelium! I will be getting more soon. Company is fast to ship great quality products
![Parafilm](https://cdn.shopify.com/s/files/1/0653/1524/2206/files/Screenshot2023-09-15at3.53.19PM_498x498.png?v=1694811756)
So much better than this roll of parafilm I had bought that turned out to be just Saran wrap. I had dropped a plate and the wrapp unraveled. This is secure and I I feel like it better against contamination
![3LB Corn Mushroom Grain Spawn](https://cdn.shopify.com/s/files/1/0653/1524/2206/files/Corn_498x498.jpg?v=1698442444)
Inoculated two days ago and I'm already seeing mycelium growth 📈. I will be purchasing again soon. I love the stickers that came with it. I made two separate purchases and got different stickers which made me happy.
![Drippy Corn Mushroom Grain Spawn](https://cdn.shopify.com/s/files/1/0653/1524/2206/products/Drippy_498x498.jpg?v=1672969818)
The mycelium taking off like crazy! It loves this stuff.
![6qt Shoebox Refill Kit | Mushroom & Grain Combo](https://cdn.shopify.com/s/files/1/0653/1524/2206/files/CornKit_498x498.jpg?v=1714315009)
Was great , shipped fast and direct . All in all no problems with these guys ever . I will say that for some reason I thought a tub was included lol 🤣 but that's my fault not theirs . I highly recommend this Company, they have never done me wrong and their products are great .
![Sorghum Yeast Agar (SYA)](https://cdn.shopify.com/s/files/1/0653/1524/2206/files/Sorghum_498x498.jpg?v=1694557763)
These plates are perfect. Clean and great recipe for healthy growth. Everything I’ve ever ordered from Mycology Simplified has been outstanding quality. Highly recommend these guys for grain as well. The best I’ve found.
![](http://mycologysimplified.com/cdn/shop/files/new_b48dbaa9-f265-4bc9-abd7-7cc5a417258f.webp?v=1715342841&width=3840)