Can be used as a substitute for stag beetle spawning logs! King Oyster Mushroom substrate [2 blocks] Easy to break apart!

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Limited Sale!!

This listing is for 2 blocks of spent mushroom substrate from Giant Stag Beetles.

Please see the 20 photos above.

These are quite large blocks.

Additional blocks are available for purchase!

These spent substrate blocks are made from 100% raw oak sawdust and are packed with nutrients.

As you can see in the photos, the mycelium is firmly established within the blocks.

Simply bury the blocks as they are in the substrate, and stag beetles will lay eggs!

They are easy to break apart, making larval extraction easier than with logs and allowing you to obtain a larger number of larvae!

Ants are laying eggs prolifically!

It also enhances the nutrition for rhinoceros beetle larvae.

When raising rhinoceros beetle larvae, you'll notice a significant increase in size simply by burying these blocks in the substrate.

They are also excellent as food for the larvae of myceliophagous stag beetles such as Giant Stag Beetles, Stag Beetles, Rainbow Stag Beetles, and Giraffa Stag Beetles!

They are also suitable for breaking apart to create your own original fermented substrate.

*The image shown is of one item from our inventory.
Please only purchase if you understand that some blocks may be slightly broken or have different shapes.

This is a limited sale, so the listing will end once sold out.

We also have other items for sale, including fermented substrate that promotes larval growth, stag beetle substrate, coniferous substrate ideal for adult beetle management, perches for adult beetle breeding and display, and high-grade pro jelly. Please check out my other listings.