Domestic larvae grow huge! Beetle substrate with excellent nutritional value [240L] No pests

# Click here for our Rhinoceros Beetle and Stag Beetle listings on Mercari!

Himalayan Oyster Mushroom Spawn Fermented Beetle Substrate - Specially formulated for growing large Japanese rhinoceros beetle larvae, packed with nutrients.

(18 images available in the photo upload section)

(Comes in a durable, tear-resistant resealable bag, allowing for long-term storage even if you have leftover substrate)

If you have a specific liter amount in mind, please message us through the questions section, and we will do our best to accommodate your request.

This premium fermented substrate is made from 100% oak sawdust, which has been proven most effective for rhinoceros beetles through years of research, using the highest quality Himalayan Oyster Mushroom spawn.

We've added several special amino acids and bacterial agents that promote the growth of Japanese rhinoceros beetle larvae.

By incorporating bacteria, the symbiotic microorganisms in the digestive tract become more active, breaking down cellulose into protein sources and improving nutrient absorption.

Feeding this from the early larval stages leads to larger adult beetles.

Experiments have shown that larvae raised on this premium fermented substrate, rich in symbiotic microorganisms like gut bacteria, grow significantly larger than those raised on commercially available substrates.

We crush new spawn made from oak sawdust and carefully ferment it for an extended period in a controlled indoor environment through a triple fermentation process.
(We do not use waste spawn discarded by mushroom farms, unlike cheaper substrates on the market.)

This is our ultimate, meticulously crafted substrate, developed over a long time and at a significant cost.

Most common fermented substrates from other companies use waste spawn from mushroom farms, which has reduced nutritional value.

Furthermore, inexpensive substrates are often fermented outdoors, leading to the inclusion of unwanted insects and fruit fly eggs, which can infest your breeding setup.

Our Fermented Substrate is made exclusively from new spawn, fermented slowly in a controlled indoor environment, ensuring a 100% absence of unwanted insects, so you won't have issues with pests or fruit flies during breeding!

We've had numerous successful molts into Guinness-sized beetles, and our repeat customer rate is over 90%, making this a highly popular substrate.

The Himalayan Oyster Mushroom spawn used in our substrate is expensive and difficult to obtain, but it's what rhinoceros beetles and stag beetles prefer most.

Our Himalayan Oyster Mushroom Fermented Substrate is recommended as food for Japanese rhinoceros beetle larvae and as a laying substrate.

We have numerous records of Japanese rhinoceros beetles reaching 88mm.

We also have a record of a single female Japanese rhinoceros beetle laying 90 eggs.