SEITZ Cavesol - Spotting Agent for Tannin & Tanning Agent Stains | 1L / 5L

Cavesol is a specialized spotting fluid from SEITZ (Germany) formulated to lift stubborn stains caused by tannins and tanning agents — the type of stain that gives professional laundries the most trouble.

Effectively removes stains from:

• Coffee & tea
• Wine
• Soft drinks
• Fruit juice & fruit
• Beverages
• Grass (green stains)
• Perfume
• Medicaments

How to use: Wet the stained area with Cavesol and let it soak in. For old/stubborn stains, soak longer and help the process along by gently dabbing with a soft brush. Re-wet a few times for the best result. It's recommended to test on a hidden seam first before applying to the main area.

Available in 2 sizes:

• 1-Liter Bottle — great for daily use at the spotting table
• 5-Liter Jerrycan — for high-volume needs / industrial-scale laundries

Best for: Professional laundries, dry cleaning, hotel laundry, garment care, and home-based laundry businesses that need an advanced stain solution.

⚠️ Professional-use chemical product. Always wear gloves during application and keep out of reach of children. Read the Safety Data Sheet (SDS) before use.

Chat with our admin to request the Safety Data Sheet!

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Site Title: SEITZ Cavesol 1L/5L | Tannin & Tanning Agent Stain Remover - Getwash

Meta Description: Cavesol by SEITZ Germany — specialized spotting agent for tannin & tanning agent stains: coffee, tea, wine, soft drinks, fruit juice, grass. Available 1L & 5L at Getwash.

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SEITZ Cavesol: The Professional Solution for Tannin and Tanning Agent Stains in Your Laundry Business

Not all stains are created equal. While sugar or sweat stains can be handled with a water-soluble spotting agent, there's a completely different category of stains that's far more stubborn because it contains tannins and tanning agents — stains from coffee, tea, wine, soft drinks, and even grass. These stains are notoriously hard to remove because their compounds bond tightly with fabric fibers, and improper handling can turn them into permanent marks. This is exactly the problem SEITZ Germany addresses with Cavesol, a professional spotting agent specifically designed for stubborn tannin and tanning agent stains.

This article covers everything about Cavesol — what it is, how it works, the stain types it handles, correct application, and why it deserves a permanent spot on your professional laundry's spotting table.

What Is Cavesol?

Cavesol is a spotting fluid produced by SEITZ GmbH, a company based in Kriftel, Germany, long trusted by the international laundry and dry-cleaning industry under their tagline "The fresher company." Unlike Frankosol, which targets water-soluble stains, Cavesol is formulated specifically to handle tannin and tanning agent-based stains — a category caused by natural compounds found in beverages and plants that are known for being some of the most troublesome stains in day-to-day laundry work.

Tannin stains have a distinctive trait: their coloring molecules (such as tannins in tea and wine, or chlorophyll in grass) have a chemical structure that binds strongly to fabric fibers, especially natural fibers like cotton and linen. The longer they're left untreated, the deeper these tannins "lock in" to the fabric structure, and heat from drying or ironing can seal the stain in permanently.

Unlike water-soluble stains, which tend to remain stable and unchanged even after a few days, tannin stains are dynamic — their color continues to shift and darken due to oxidation on contact with air. This is exactly why fast treatment and using the right category of product matter so much for this type of stain, and why SEITZ developed a separate formula for it rather than folding it into a single all-purpose product.

Why "Tannin & Tannin Stains" Are a Different Category from Water-Soluble Stains

In the professional laundry industry, stains are generally grouped into a few major categories:

1. Water-soluble stains — sugar, milk, sweat, urine (handled by products like Frankosol)
2. Tannin/tannin stains — coffee, tea, wine, soft drinks, fruit juice, grass
3. Oil/grease-based stains — motor oil, butter, oil-based cosmetics

Cavesol is specifically designed for the second category. Using the wrong product category — for example, trying to remove a coffee stain with a regular water-based spotting agent — often only fades the surface of the stain without truly lifting the tannin, leaving a faint mark still visible once the fabric dries.

Composition and How Cavesol Works

Cavesol works by breaking the chemical bond between tannin/tannin molecules and fabric fibers. Tannins found in coffee, tea, and red wine are generally polyphenolic compounds that oxidize easily and darken over time — which is why a coffee or tea stain left overnight tends to be much harder to remove than a fresh one.

The Mechanism at the Fiber Level

When applied to a stain, Cavesol penetrates the fibers and begins loosening the bond between the tannin and the fabric structure. This allows already-oxidized tannin to re-dissolve and lift more easily during the next wash. Just like Frankosol, Cavesol functions as a pre-treatment rather than a detergent replacement — it prepares the stain so the main wash cycle can work far more effectively.

A Formula Built for Professional Use

Because tannin properties vary depending on their source (tea tannin behaves differently from grass chlorophyll, for instance), Cavesol is formulated with a concentration strong enough to handle multiple types of tannin stains at once. This product is recommended for professional users only, and testing on a hidden area of the fabric remains a mandatory step before applying it to the main area, since reactions can vary depending on fabric type and color.

Types of Stains Cavesol Can Remove

Colored Beverage Stains

Coffee & Tea Stains

Coffee and tea contain high levels of tannin — a compound that soaks into fabric fibers quickly and is known as one of the hardest stains to remove in the laundry industry, especially on light-colored fabric.

Wine Stains

Wine is one of the most feared stains in the laundry and hospitality industry because its tannin content is highly concentrated and absorbs quickly into fabric fibers. Cavesol is specifically designed to handle this type of stain.

Soft Drink Stains

Dark-colored soft drinks contain tanning agents and dyes that easily leave marks if not treated promptly. Cavesol effectively dissolves this residue from fabric fibers.

Fruit Juice & Fruit Stains

Fruit juice and fresh fruit such as berries, mango, or citrus contain natural tannins that can leave strong stains, especially on white or light-colored fabric.

Natural and Organic Stains

Beverage Stains

Colored beverages in general can leave tannin stains that soak in quickly, especially if left to dry without early treatment.

Grass Stains

Grass contains chlorophyll, a natural green compound notoriously difficult to remove due to its unique structure and tendency to bond strongly with fabric fibers. This stain is commonly found on sports uniforms or children's clothing.

Other Substance Stains

Perfume Stains

Certain perfumes contain dyes and alcohol that can leave marks on fabric, especially dark-colored or delicate materials.

Medicament Stains

Some liquid medicines or syrups contain tanning agents and coloring compounds that can leave stubborn stains. Cavesol is also effective at treating this stain type.

The Correct Way to Use Cavesol

Application Steps

1. Identify the Stain Type and Age

Identify the source of the stain and estimate its age. Fresh tannin stains are far easier to lift than ones that have been sitting for a while and have already dried in.

2. Test on a Hidden Area First

Apply a small amount of Cavesol to an inner seam, wait a moment, then check for any color or texture reaction before continuing to the main area.

3. Wet the Stained Area

Once confirmed safe, wet the stained area with enough Cavesol and let it soak in so the liquid can start loosening the bond between the tannin/tanning agents and the fabric fibers.

4. Soak Longer for Old/Stubborn Stains

For stains that have been sitting for a while, soak the area longer and help the process along by gently dabbing with a soft brush. Avoid scrubbing too hard, as this can damage the fabric fibers.

5. Re-Wet a Few Times for the Best Result

Repeat the wetting process a few times on old coffee, tea, or wine stains for the best result before the fabric goes into the main wash cycle.

Additional Tips for Best Results

• Use a soft brush, not a stiff one, so you don't damage the fabric's texture while helping the spotting process along.
• Always wear protective gloves during application.
• Store Cavesol out of reach of children.
• Read the Safety Data Sheet (SDS) before first use — message the Getwash admin to request the file.
• Treat tannin stains as quickly as possible after they occur, since the longer they're left, the harder they become to remove.
• Avoid drying or ironing the fabric until you've confirmed the stain is fully gone, since heat can lock the stain in permanently.

Common Mistakes When Handling Tannin Stains

Leaving the Stain Too Long Before Treatment

This is the most critical mistake for tannin stains. Unlike relatively stable water-soluble stains, coffee, tea, and wine stains continue to oxidize over time. The longer they're left untreated, the darker and more deeply bonded the tannin becomes to the fabric fibers, making the spotting process far harder even with the right product.

Drying or Ironing the Fabric Without Confirming the Stain Is Fully Gone

Heat from a dryer or iron can "bake in" any remaining tannin, locking it in permanently. Always inspect the fabric under bright light before drying to make sure no residue remains.

Using the Wrong Product Category

Trying to treat a coffee or wine stain with a spotting agent designed for water-soluble stains usually only fades the surface color without truly lifting the tannin from within the fibers, causing a faint mark to reappear once the fabric dries.

Skipping the Test on Dark-Colored Fabric

Dark fabric is often assumed to be "safe" from visible color change, but chemical reactions can still occur even if not immediately obvious. A hidden-area test is still mandatory on fabric of any color.

Cavesol vs. Conventional Methods for Tannin Stains

Many home-based laundries still rely on conventional methods like soaking fabric in hot water or manually scrubbing coffee or wine stains. Here's why a Cavesol-based approach is far more effective.

Avoiding the Risk of Hot Water Locking In Tannin

Hot water is often used to "fade" coffee or tea stains, but heat can actually accelerate tannin oxidation, making the stain even harder to remove. Cavesol works chemically without requiring high temperatures, avoiding this risk entirely.

Precision on the Stain Point Without Affecting the Fabric's Overall Color

Unlike soaking the entire fabric, Cavesol allows for precise treatment of just the stained area, keeping the rest of the fabric's original color intact.

More Consistent Results for Wine and Coffee Stains

Manual scrubbing often produces uneven results — sometimes the stain disappears, sometimes it just fades. With a spotting SOP built around Cavesol, results become far more predictable from one piece of linen to the next.

Real-World Use Cases in Hotel and Restaurant Laundry

Restaurant Scenario — Red Wine Stains on Tablecloths

Fine dining restaurants or hotels with wine service frequently deal with red wine stains on white tablecloths. Applying Cavesol immediately after the incident, before the tablecloth joins the general laundry pile, significantly increases the chance of a full recovery compared to waiting for the next day's regular wash.

Café/Coffee Shop Scenario — Staff Uniforms with Coffee Stains

Café or barista uniforms are prone to daily coffee spills. Laundries serving this segment can make Cavesol a standard part of their weekly pre-treatment SOP to keep uniforms looking professional.

School/Sports Club Scenario — Uniforms with Grass Stains

School sports uniforms or football club kits often get grass stains on the knees and pants. The chlorophyll in grass is a tannin stain that's difficult to remove with regular washing, making Cavesol application as a pre-treatment highly recommended before the main wash cycle.

Recommended Standard Operating Procedure (SOP) for Tannin Stain Spotting

Pre-Application Checklist

• Identify the stain source (coffee, tea, wine, grass, etc.) and estimate its age.
• Check the fabric's care label if available.
• Prepare protective gloves and a well-ventilated work area.
• Test on a hidden area of the fabric, including dark-colored fabric.

During-Application Checklist

• Apply just enough Cavesol directly to the stain.
• Let it soak in according to the tannin's concentration.
• Repeat application for oxidized or darkened stains.
• Log the stain type and source in a work log for quality evaluation.

Post-Application Checklist

• Inspect the fabric under bright light before drying.
• Make sure no tannin residue remains before ironing or heat-drying.
• Store Cavesol safely afterward, out of reach of children.

A consistent SOP like this helps your laundry handle tannin and tannin stains more reliably, reducing the risk of complaints from institutional clients like hotels and restaurants who pay close attention to their linen quality.

Cavesol vs. Frankosol: Which One Should You Use?

For laundries already using Frankosol, a natural question comes up: when should you switch to Cavesol? Here's a simple guide to help distinguish between the two.

Frankosol for Water-Soluble Stains

Use Frankosol for stains from sugar, milk, sweat, urine, honey, ice cream, and street dirt — stains that generally don't leave strong tannin but tend to be sticky or contain salt/protein.

Cavesol for Tannin and Tannin Stains

Use Cavesol for stains that leave strong, stubborn coloring like coffee, tea, wine, soft drinks, fruit juice, and grass — stains that tend to oxidize and darken over time.

Using Both Together

For mixed stains — such as a spilled sugary colored drink like syrup or fruit cocktail — combining both products often gives the best result: Frankosol to dissolve the sugar component, Cavesol to lift the color tannin. Having both on your spotting table ensures your team is ready to handle nearly any stain that might come up in daily operations.

Storage Tips and Shelf Life

To keep Cavesol performing at its best, follow these storage practices:

• Store bottles/jerrycans at room temperature, away from direct sunlight that could affect formula stability.
• Make sure the cap is always tightly closed after use to prevent evaporation or contamination.
• Keep it on a dedicated laundry chemical shelf, separate from food storage or staff personal items.
• Label containers clearly, especially if transferred into smaller applicator bottles, to avoid misuse by new staff.

Who Is Cavesol For?

• Professional laundries — as a complement to Frankosol for more complete stain coverage.
• Dry cleaning — handling tannin stains before the solvent-based process.
• Hotel laundry — especially for restaurant linens and F&B areas prone to coffee, wine, and colored drink stains.
• Garment care — caring for premium apparel that requires precise stain treatment without damaging the fabric's original color.
• Home-based laundry businesses looking to improve service quality for stubborn stains customers frequently complain about.

Why Buy Cavesol from Getwash?

Genuine Products from a Trusted Distributor

Getwash supplies authentic SEITZ products, ensuring consistent, safe results across various fabric types.

Flexible Packaging Options

Available in both 1-liter bottles and 5-liter jerrycans to match your business's scale.

Technical Support and Safety Documentation

The Getwash team is ready to guide you on proper use and provide the Safety Data Sheet (SDS) — just reach out to our admin via chat.

Frequently Asked Questions (FAQ)

Can Cavesol be used together with Frankosol?

Yes. The two complement each other — Frankosol for water-soluble stains, Cavesol for tannin and tannin stains — giving your spotting table more complete stain coverage.

Is Cavesol safe for colored fabric?

Cavesol is generally safe, but a hidden-area test is always required first, especially for dark-colored or delicate fabric.

Why are old coffee/tea stains harder to remove?

Because the tannins in coffee and tea oxidize over time, the longer they're left untreated, the stronger their bond to the fabric fibers and the darker the color becomes.

Is Cavesol effective on grass stains on sports uniforms?

Yes. Chlorophyll in grass falls under the tannin stain category that Cavesol's formula is specifically designed to target.

Which size is more cost-effective, 1 liter or 5 liters?

For laundries with high tannin stain volume (e.g., serving restaurants/cafés), the 5-liter jerrycan is more cost-efficient per liter than repeatedly buying 1-liter bottles.

Can Cavesol remove old perfume or medicament stains?

Cavesol can still help lift old perfume or medicament stains, but like other tannin stains, the longer they've been left, the more likely repeated application will be needed for the best result.

Do I need to mix Cavesol with detergent before applying it?

No. Cavesol is applied directly in its pure form to the stain as a pre-treatment step. Mixing with detergent happens separately during the main wash according to your laundry's standard procedure.

Conclusion

Cavesol by SEITZ is an essential complement to your professional laundry's spotting table, specifically for handling stubborn tannin and tannin stains like coffee & tea, wine, soft drinks, fruit juice & fruit, beverages, grass, perfume, and medicaments. Combined with Frankosol, your laundry business gains a complete solution for nearly every type of stain it might encounter on a daily basis.

Available in 1-liter bottles and 5-liter jerrycans, Cavesol offers the flexibility to match your business's scale. Get the genuine SEITZ Cavesol today at Getwash.

Want to learn more or need the Safety Data Sheet (SDS)? Chat with the Getwash admin today.


 

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