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Premium 3rd Fermentation Kuwaka Beetle Substrate [30L] For Miyama, Stag Beetle, Foreign Hirata, and Ante

★★★★★ 4.5 rating · 35 reviews · 347+ sold
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Product Details

# Click here for Stag Beetle & Rhinoceros Beetle Products on Mercari!

Stag Beetle Larvae Grow Huge!

Introducing:
Specially Selected! Triple Fermented! Fine Particle! Himalayan Oyster Mushroom Premium Fermented Stag Beetle Substrate

30 Liters (Set of 3 x 10L bags)

Free Shipping!

(Convenient resealable bags)

We will ship the quantity you desire.

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

We've further refined the regular Himalayan Oyster Mushroom substrate into a finer particle size for easier consumption, and added triple the amount of nutritional supplements such as trehalose, glucose, chitosan, royal jelly, special amino acids, and symbiotic bacteria. This is our specially selected premium substrate.

We do not use any discarded substrate. We crush new substrate made from fresh sawdust and ferment it slowly indoors.

This is our ultimate, meticulously crafted substrate, triple-fermented with significant cost and time investment.

Most other fermented substrates use discarded substrate, leading to the presence of unwanted insects and fruit flies. Our substrate is completely free of such contaminants.

Thanks to the consistently large individuals produced, this substrate has a very high repeat customer rate.

Even with the same mycelium, substrate finished with Himalayan Oyster Mushroom mycelium is most preferred by stag beetles and results in larger individuals.
Himalayan Oyster Mushroom is expensive and difficult to obtain.

It can be used as food for larvae and as a laying substrate for all types of stag beetles, both domestic and foreign, that use fermented substrates.

It is suitable for Miyama Stag Beetles and Sawtooth Stag Beetles.

You can also raise Sumatran Stag Beetles, Japanese Rhinoceros Beetles, and Rainbow Stag Beetles with this substrate.

Naturally, it's suitable for all types of rhinoceros beetle larvae as well.

This substrate is made by crushing and fermenting fresh substrate and adding triple the usual amount of nutritional supplements, resulting in exceptional nutritional value.

The key to raising large adult stag beetles is to feed the larvae plenty of high-quality food during their larval stage.

The high-calorie, nutritionally rich Himalayan Oyster Mushroom Premium Fermented Stag Beetle Substrate is the pinnacle of larval food.

Guinness-sized Miyama Stag Beetles have been recorded.

Compared to using pre-made mycelium bottles, this substrate offers more versatility and cost-effectiveness, as you can portion it into jars or pudding cups.

We regularly receive orders from stag beetle shops nationwide and have received high praise.

Some users of this fermented substrate have won top prizes multiple times in Be-Kuwa contests.

Not only is it excellent for feeding larvae, but using it as a laying substrate results in a large number of eggs.
Separate shipping fees apply for Okinawa and remote islands.

Category
Larvae Rearing & Substrate Bottles
Condition
New/unused
Shipping
Included in price (by seller)
From
Tokyo

Daily Cleaning: Use a soft brush or damp cloth to gently wipe away dirt. Avoid harsh chemicals. For mesh areas, use diluted mild detergent and a soft brush.

Drying: Air dry in a cool, shaded place after cleaning. Avoid direct sunlight or high heat, which can cause fading and glue deterioration.

Storage: Stuff with paper to maintain shape when not in use. Store in a dry, ventilated area to prevent mold. Rotate between multiple pairs to extend lifespan.

Usage Notes: Designed for basketball. Not recommended for hiking, long-distance running, or other specialized sports where different performance features are required.

Customer Reviews (35)

4.5
★★★★★
Based on 326 reviews
5 stars
90%
4 stars
10%
3 stars
0%
2 stars
0%
1 star
0%
M
User5751268
★★★★★
2026-11-06

Everything matched the listing perfectly.