Just add rhinoceros beetle larvae! Premium fermented substrate in a case [Set of 2]

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Exceptional Nutritional Value
4400ml Plastic Case Included ☆ Special Selection! 3rd Fermentation! Fine Particle! Himalayan Oyster Mushroom Premium Fermented Substrate

(10 photos above)

Generous 4400ml Plastic Bottle

With Ventilation and Filter

2 Sets for ￥5399 (Free Shipping)

We will ship the quantity you desire.

Plastic Case with Special Filter

Wide Opening for Easy Larvae Removal - A Case Crafted with Care

Made using 100% oak sawdust, which stag beetles prefer most, and finished with the highest quality Himalayan Oyster Mushroom mycelium. This is a fermented substrate.

We've further refined the regular Himalayan Oyster Mushroom substrate into fine particles for easier consumption, and added 3 times the usual amount of nutritional supplements like trehalose, glucose, chitosan, special amino acids, and symbiotic bacteria, making it a specially selected premium substrate.

This is an ultimate, meticulously crafted substrate that has undergone 3 rounds of fermentation, taking time and effort without using any waste mycelium.


We've had a high repeat customer rate thanks to the large individuals consistently being produced.

Even with the same mycelium, substrates finished from Himalayan Oyster Mushroom mycelium are most preferred by stag beetles and rhinoceros beetles, leading to larger individuals.

Himalayan Oyster Mushrooms are expensive and difficult to obtain.

Ideal for raising larvae of exotic beetles such as Hercules and Caucasus.

Naturally, it's also excellent for Japanese rhinoceros beetles, Miyama stag beetles, Saw stag beetles, and Flat-headed beetles.

The substrate is made by crushing and fermenting mycelium blocks, with 3 times the usual amount of nutritional supplements added, resulting in exceptional nutritional value.

They eat it voraciously.

The key to raising large adult rhinoceros beetles is to let the larvae eat plenty of high-quality food during their larval stage.
With high-quality substrate, rhinoceros beetle larvae will continue to eat heartily.

This high-calorie, exceptionally nutritious Himalayan Oyster Mushroom Premium Mycelium Fermented Rhinoceros Beetle Substrate is the pinnacle of larval food.

Hercules beetles measuring 180mm, and Japanese rhinoceros beetles and Miyama stag beetles have achieved Guinness-level sizes.


The larvae's feeding response is different, allowing you to aim for super-giant sizes.

Since it comes in a case with substrate, it's convenient to just add the larvae.

Can be used from the first instar to the third instar, and until eclosion.


Among the users of this fermented substrate are individuals who have won top prizes multiple times in Be-Kuwa contests.

Not only is it excellent as larval food, but using it as a laying substrate results in females laying a large number of eggs.

All bacteria have been perfectly treated, so no unwanted insects or fungus gnats will appear.
*Separate shipping fees apply for Okinawa and remote islands.