Zeolite is a natural volcanic mineral that was formed millions of years ago when glowing lava flowed into the sea. This created tiny cavities and channels in the rock - a microporous structure that makes zeolite an extraordinary mineral. It can bind pollutants, release minerals, and act as an ion exchanger (i.e., exchanging harmful substances for useful minerals). The most important natural type of zeolite for humans, animals, and soil is clinoptilolite zeolite.

👉 Read more: Zeolite explained in a nutshell

Three things differentiate us: raw material, milling process, and control.
Our clinoptilolite comes from the best mining region in Europe — Eastern Slovakia — and is not blasted, but gently extracted. It contains at least 80% pure clinoptilolite.
The milling process is crucial: We use Air2Air Activation Technology — a tribomechanical process in which zeolite particles collide with each other due to airflow and grind themselves. No metal abrasion, no crushed crystal lattices. The result: an average particle size of 14–35 µm and an active surface area of over 600 m² per gram.
Everything is in one hand — from production to you. We are regularly inspected unannounced by the Austrian feed authority.

👉 Learn more: 5 Questions You Should Ask Your Zeolite Seller

It's simple: the magnet test. Put zeolite in a glass of water, stir, and hold a magnet to the outside of the glass. If a black cloud forms—these are metal impurities from incorrect grinding. You don't want such zeolite in your body, on your skin, or in your animals' feed.
Many products are advertised as "ultra-fine"—always check the actual particle size (d50 value). A product with a d50 = 95 µm is not ultra-fine, even if it is advertised as such. STEINKRAFT zeolite has a d50 value of 14 µm.

Yes. Clinoptilolite zeolite is 100% natural, without chemical additives and generally compatible with organic farming.
As a feed additive, it is approved throughout the EU under the identification number E568 — confirmed by EFSA opinions 2012 and 2013. For the exact classification in your own operation, we recommend consulting with the responsible organic control body.

Preferably in BPA-free plastic containers or glass containers. Zeolite is hygroscopic (= absorbs moisture) — therefore, never store it in paper bags. Store in a dry, cool place, protected from light. When stored correctly, zeolite has an almost unlimited shelf life.

The Swedish mineralogist Axel F. Cronstedt first described zeolite in 1756. He observed that the mineral began to bubble when heated — and therefore named it zeolite (= boiling stone, from the Greek zein = to boil, lithos = stone). Zeolite became known worldwide after the Chernobyl reactor disaster in 1986 — at that time, about 500,000 tons of natural zeolite were used for decontamination.

Zeolite is successfully used in horses for:

• Diarrhea (= brown liquid running down the horse's tail — a common and persistent problem indicating intestinal issues)
• Coat change — zeolite supports metabolism during this demanding transitional phase, promoting a shinier coat and more vitality
• Sweet itch — as internal support for horses sensitive to insect bites
• Thrush — applied externally as HORSEKRAFT Hoof Powder, it absorbs moisture and protects the hoof
• Laminitis prevention — supports feed changes, for example, when transitioning to pasture grass in spring
• Mold or mycotoxins in feed — zeolite binds mycotoxins in the gut before they enter the bloodstream
• Colic and digestive problems — stabilizes the intestinal flora (= the balance of gut bacteria) and can prevent colic
• Joint problems and swelling — as a supportive measure to relieve the metabolism
• Stress and overexertion — for sport horses after competitions or intense training for faster regeneration
• General prevention — as a daily feed supplement for a healthy gut and optimal nutrient absorption

👉 Read more: Zeolite for Horses — Effects, Studies & Application

Dosage depends on body weight and application:

Daily prevention / feed optimization: 5 g per 100 kg body weight daily — i.e. approx. 25–30 g for an average warmblood horse (500–600 kg)

As a course (e.g. during coat change, with loose stools, after medication): Dosage can be increased — but max. 100 g/day or max. 1% of the total feed amount (legal requirement of the Austrian feed authority, E568)

How to introduce: Start with half the dosage and slowly increase to the full amount within 7–10 days. This way, the horse's digestive tract
will optimally adapt to the new component.

Important: Always provide plenty of fresh water — Zeolite works best with good hydration.

👉 More on this: Zeolite Dosage for Horses — the complete guide

Both forms contain the same high-quality clinoptilolite zeolite with an average particle size of 24 µm — the optimal size for the equine gut.

HORSEKRAFT Powder: Mixes invisibly into feed, ideal for picky horses that would sort out foreign substances. Simply moisten lightly and mix in.

HORSEKRAFT Pellets: Dust-free, easy to dose, practical when multiple horses are being fed. Some horses prefer pellets to powder.

Tip: If your horse initially rejects the zeolite, start with a pinch in their mash and gradually increase the amount weekly. Patience pays off — most horses accept it without problems after a short adjustment period.

"My gelding initially snubbed the powder. I then put just a pinch into his mash and increased the amount a little each week. After two weeks, he ate it without any problems."

Yes – hindgut fermentation fluid is one of the most common applications for zeolite in horses, and our customers' feedback is very positive.

Hindgut fermentation fluid usually results from an imbalance in the gut – zeolite binds excess acids, toxins, and harmful substances, soothes irritated intestinal mucous membranes, and stabilizes the gut environment (the balance in the gut). Many horse owners report significant improvement within a few days to weeks.

"We were recommended STEINKRAFT Zeolite by our vet – hindgut fermentation fluid gone after three days." ⭐⭐⭐⭐⭐

"My sister's horse always suffered from hindgut fermentation fluid – you could see how it improved week by week with STEINKRAFT Zeolite. Now she has no more problems with it!" – S.G. ⭐⭐⭐⭐⭐

"The hindgut fermentation fluid got much better after some time. I have now bought it again." ⭐⭐⭐⭐⭐

👉 More on this: Hindgut fermentation fluid in horses – Causes, Home Remedies & Zeolite

The coat change is real work for the horse's body – the immune system is challenged, metabolism is running at full speed, and many horses appear lethargic and eat less.

Zeolite supports during this phase in several ways: It binds metabolic residues and excess acids, improves nutrient absorption, and supplies the body with important trace elements such as silicon – the coat becomes shinier, and the coat change is quicker and easier.

Recommended dosage during coat change: 5 g per 100 kg body weight daily – ideally 4–6 weeks before and during the coat change

"Dodo was given the black cumin-zeolite product, and we noticed a positive effect on his coat. His coat is shinier and no longer as dull. The product helped him through the coat change really well. He doesn't rub himself quite as much anymore." ⭐⭐⭐⭐⭐

"My senior always has problems with coat change. Fed zeolite for 3 months – significantly better coat quality." ⭐⭐⭐⭐⭐

👉 Read more: Zeolite for horses in autumn – coat change & immune system

HORSEKRAFT Hoof Powder is a zeolite powder for external application directly to the hoof — specially developed to combat thrush (= inflammation of the frog, the soft central part of the sole of the hoof, often caused by moisture and germs) and for excessively moist hooves.

Zeolite binds moisture, inhibits germs, and protects the frog — without chemicals, simply through its physical structure.

"For us, HORSEKRAFT Hoof Powder is the most effective product to date for thrush or excessively moist hooves. It reduces pain, forms a protective film, and keeps the frog dry and clean. A noticeable improvement can be seen very quickly." ⭐⭐⭐⭐⭐

Yes — STALLKRAFT bedding (zeolite + lime + organic herbs) or pure zeolite powder can be used as bedding in horse stables. It binds ammonia (NH₃) directly at the source, keeps the bedding drier, and improves air quality in the stable — especially important for horses' respiratory tracts when lying down.

"I use STEINKRAFT zeolite bedding for two reasons: for hygiene reasons and because the horses don't inhale the ammonia smell as strongly when lying down. We have horses with paddocks and these are mucked out daily."⭐⭐⭐⭐⭐

Sweet itch is an allergic reaction to insect bites (especially midges) and causes a great deal of distress to many horses. Zeolite works from within – it supports detoxification, binds toxins in the gut and can strengthen the immune system, so that the horse reacts less severely to bites. Many horse owners report significant relief when using a combination with organic black cumin (HORSEKRAFT Black Cumin-Zeolite).

👉 Read more: Sweet itch in horses – how zeolite and black cumin can help

Zeolite can primarily help preventatively - especially during the dangerous feed transition in spring when horses are switched to pasture grass. Zeolite stabilizes the intestinal flora, binds toxins, and buffers excess acids. This can reduce the risk of laminitis triggered by feeding. In cases of acute laminitis, please always consult a veterinarian - zeolite does not replace veterinary treatment.

👉 Read more: Spring and horses - challenges and how zeolite can help

Yes – sport horses in particular benefit greatly from zeolite. After intensive training sessions or competitions, the body produces increased metabolic by-products and free radicals (= aggressive oxygen compounds that attack cells). Zeolite helps to excrete these more quickly and thus supports faster regeneration.

Steffen Engfer, a successful show jumper, reports:
"My well-trained sport horses need to regenerate quickly and be fit again after a competition or intensive training. I want to make everything that costs them energy easier for them. I chose pellets - I notice that a 5 kg bucket lasts me a very long time."⭐⭐⭐⭐⭐

• HORSEKRAFT Zeolite Powder – daily feed supplement, ideal for picky eaters, invisible in feed
• HORSEKRAFT Zeolite Pellets – dust-free, practical, easy to dose
• HORSEKRAFT Black Cumin-Zeolite – combination for coat, skin and summer eczema
• HORSEKRAFT Hoof Powder – external application for thrush and moist hooves
• STALLKRAFT Bedding – for stable floors and paddocks, ammonia binding and hygienic stable climate

Not sure which product is right for your horse? Call or write to us – we will advise you personally and free of charge.

• Maintain a minimum distance of 2 hours from medication - otherwise, zeolite could bind active ingredients.
• Maintain a minimum distance of 2 hours from mineral feed and vitamin supplements.
• In case of severe acute illness, please consult your veterinarian first - zeolite is a supplement, not a substitute for veterinary treatment.

This varies greatly from horse to horse. Some horses show more stable digestion or less loose stool after just a few days. For others, it takes 2–4 weeks until visible changes occur. Patience pays off—the body needs time to adjust. For a course of treatment, we recommend at least 6–8 weeks.

Many veterinarians and animal naturopaths recommend STEINKRAFT Zeolith aktiv — especially for loose stools, digestive problems, and for general metabolic relief.

"My animal naturopath recommended the zeolite product to me to support my mare's metabolism. STEINKRAFT Zeolith has very good quality compared to other products and has the right grain size for horses." ⭐⭐⭐⭐⭐

"STEINKRAFT Zeolith has exactly the right grain size for horses." ⭐⭐⭐⭐⭐

👉 All horse blog posts: Zeolite for horses — all articles

STEINKRAFT offers specific products for dogs (DOGKRAFT) and cats (CATKRAFT). Zeolite supports digestion, detoxification, and general vitality – as a feed additive mixed into the food.

As a general guideline: 0.5% of the daily feed amount, maximum 1%. Start with half the amount and gradually increase to the full dosage within 5–7 days. Important: Always provide plenty of fresh water. DOGKRAFT Zeolite has an average particle size of 14 µm — so you need less than with coarser products.

👉 More on this: Zeolite Dosage for Dogs — The Complete Guide

Zeolite should be administered at least 2 hours before or after medication, as it can bind active ingredients from medications. For chronically ill animals, always consult with a veterinarian.

Yes. Zeolite can also be given to cats—either in their drinking water or mixed wet with their food. Cats are often pickier than dogs; administering it with drinking water is usually easier. Please contact us for a customized dosage recommendation.

• STALLKRAFT Litter (Zeolite + Lime + Organic Herbs): For all livestock as stable bedding — cattle, pigs, sheep, goats, poultry
• TIERKRAFT Zeolite: As a feed additive for cattle, pigs, sheep, and goats
• GÜLLEKRAFT N-FIX: For slurry enhancement — binds NH₃, reduces odor, increases nutrient content
• AM+PLUS Active Microorganisms: For stable air nebulization, slurry treatment, and feeding

Yes. Clinoptilolite-zeolite is approved as a feed additive (E568) for all animal species throughout the EU. In practice, it is successfully used in cattle, pigs, sheep, goats and poultry. The recommended dosage is max. 1% of the total daily feed intake — best mixed with moist feed.

STALLKRAFT litter binds ammonia (NH₃) directly at the source — in the manure, before it escapes into the air. This keeps the litter drier, reduces germs, improves the stable climate and protects the respiratory tracts of animals and humans. 100–200 g/m² of floor area are recommended; refresh as needed. The powder can be easily mixed with straw litter.

Zeolite binds ammonium nitrogen (NH₄⁺) in slurry and prevents its outgassing as ammonia (NH₃). The nitrogen remains bound in the slurry and is fully available to plants when applied. Result: up to 80% nitrogen utilization in the field – significantly more than without treatment. At the same time, odor pollution is significantly reduced.

👉 Read more: NH₃ binding in slurry: Specific recommendations for action

Yes. Zeolite and bentonite can bind aflatoxins and other mycotoxins (mould toxins) in the digestive tract of livestock and safely excrete them. This has been proven in numerous studies for cattle, pigs, and poultry—even if the feed appears outwardly unremarkable.

As bedding in cubicles, zeolite keeps resting surfaces dry and binds ammonia. Less moisture means fewer germs and thus a positive effect on hoof health and Mortellaro. Many farmers report significant improvement after regular STALLKRAFT application.

AM+PLUS are active microorganisms (photosynthetic and lactic acid bacteria, as well as yeasts), produced by Loidholdhof in Upper Austria from organic Austrian herbs. In the stable, they are used for stable air nebulization: 0.2 liters of AM+PLUS per 10 liters of water, sprayed at least 3 times a week. This reduces odor, germs, and flies — and starts the healthy fermentation process in the manure, which significantly improves slurry quality.

That depends on the animal species, the housing system, and the application. Write to us or call us — we will gladly help you with the calculation, free of charge and personally.

No — zeolite does not replace fertilizer, but it makes fertilizer more efficient. Nutrients are bound in the soil instead of being leached out and are slowly released to the plant. In practice, this means less fertilizer for the same or a better effect. Many farmers report that they need significantly less fertilizer after zeolite treatment.

• BODENKRAFT PUR (Zeolite): Work directly into the soil with a seed drill, spreader, or cultivator — as a permanent soil improvement
• GRÜNKRAFT CALCIUM / Zeolith Pur: Spray onto leaves as a foliar fertilizer with a field sprayer or drone
• AM+PLUS: Into irrigation water (1:100), into liquid manure (0.1 L per m³), or via foliar spraying

That depends on the crop, soil, and goal. Contact us directly — we will calculate the right amount for your farm.

The fine silicate particles on the leaf surface stimulate microorganisms that absorb nitrogen from the atmosphere and make it available to the leaf. The result: dark green, lusher leaves — naturally supplied with nitrogen. In addition, the particles form a natural barrier against mites and aphids, as they mechanically disrupt their respiratory organs — without chemicals.

Lime is the engine for all other nutrients. Without the correct pH value (= acidity), plants cannot absorb fertilizer — even if it is present. Lime regulates the pH value, activates soil life, and makes nutrients available to plants. STEINKRAFT lime has a plant availability of up to 96% due to the tribo-mechanical grinding process.

AM+PLUS are active microorganisms from Austrian organic production. In arable farming, they are used for soil revitalization (1:100 with water), as a foliar spray, and for slurry treatment. They promote humus formation, make nutrients available to plants, and improve soil structure long-term. In combination with zeolite, they unleash their full potential.

Yes. All STEINKRAFT agricultural products can be used in organic production according to Regulation (EU) No. 2018/848. For the exact classification in your own operation, we recommend consulting your organic certification body.

Zeolite can be directly incorporated into the soil (BODENKRAFT PUR powder or granules), sprayed on as a foliar fertilizer (GRÜNKRAFT), or mixed into the watering can (AM+PLUS). For raised beds, we recommend a layer of zeolite granules in the bottom layer of soil — this permanently improves water retention and nutrient availability.

As a soil amendment: work approx. 100–300 g per m² into the topsoil. In pots: 10–20% of the substrate. As a foliar fertilizer: spray diluted according to product instructions. Zeolite has a long-lasting effect — one treatment lasts for several years.

Yes. Zeolite does not weather or break down—it remains permanently in the soil and improves water retention capacity,
nutrient availability, and soil structure in the long term. A single application is effective for many years.

Yes — and it's even highly recommended. Zeolite binds the ammonia (= nitrogen) in the compost, prevents its outgassing, and makes the finished compost richer in nutrients. At the same time, zeolite buffers the moisture in the compost pile. AM+PLUS further accelerates the composting process.

👉 Read more: Compost and Zeolite — The Best Combination

We usually deliver within 1–3 business days to Austria and Germany. You will receive a shipping confirmation with a tracking link.

Shipping costs by weight:

• Austria: € 5.20
• Germany: € 4.90 - € 7.40
• Free shipping for orders over € 70

Yes – and that's important to us. No call centers, no waiting loops. You can reach us by email (office@steinkraft-naturerocks.com) or by phone. We take the time to answer your questions – whether about dosage, product selection, or your business.

No. You can also order a single product.

Yes, according to Austrian and EU law, you have a 14-day right of return for unopened products. Simply contact us — together we will find a solution.