To the content To main menu

Category: Premium


Company with deep-rooted sustainability

Annual savings:

Carbon dioxide


Crude oil

Gerline Tröstl
Managing Director Markas GmbH

“As a family-run company, we always act with future generations in mind. Sustainability and environmental awareness are at the center of our attention and have been since our founding!”

Markas: a sustainable family-run business with a futuristic vision  

For more than 30 years, Markas has made its mark in the cleaning industry. Having begun with just a handful of employees, the family business now managed by the second generation has developed into a company with a workforce of over 9,000. The company’s growth has not diminished the owners’ commitment to sustainability and responsibility. Remaining true to their roots, they always act with people and the environment in mind.

Proof of the company’s commitment to the environment is its 25 years of cooperation with Werner & Mertz. From the start, they shared the idea of qualitative cleaning performance made possible by highly effective cleaning products. Moreover, the two companies understood the importance of the “soft” aspects such as ecology, resource conservation and safety for people and the environment. Since then, both companies have intensified their environmental protection efforts. Green Care Professional has further developed its products while Markas has fulfilled the highest environmental standards (ISO 14001 and EMAS) for years and most recently has worked according to an EU Ecolabel-certified cleaning process.   

Every kilo of plastic, crude oil or CO2 that can be avoided spares the environment from pollution and contributes to a more livable future. It’s no exaggeration to say that Markas has been a huge success. Not least of all because many satisfied customers have been pleasantly surprised to learn that ecology, hygienic cleanliness and a good price/performance are not necessarily contradictory.

Success, short & sweet

  • For more than 25 years, a pioneering partner in ecological cleaning
  • Overall, exemplary conservation of important resources (crude oil, plastic, CO2)
  • Customer satisfaction, “pleasantly surprised”  
  • Satisfied employees and strong employer brand


Joint pioneer in ecological
cleaning for more than 25 years

Highly satisfied,
“pleasantly surprised” customers

Products in Use

Immobilien Service Deutschland

Immobilien Service
Housing industry
with a green thumb

Annual savings:

Carbon dioxide



Axel Käseberg
Department Head
Building Cleaning

“For some time we have been going through a sort of ‘green restructuring’, which means that we are turning proven products and processes upside down and inside out to find more sustainable solutions. With an annual consumption of more than 70,000 liters of cleaning chemicals, we realized very quickly measurable reductions (in CO2, crude oil, plastic) with products from Werner & Mertz.”

Sustainable maintenance and value preservation with the building services provider for residential and commercial real estate

Since 1983 Immobilien Service Deutschland has been looking after the maintenance and value preservation of real estate and properties of every type. Building cleaning is an important business unit alongside building services, green space maintenance and winter service. With representation in 90 locations, the company takes care of 20,000 objects with a workforce of more than 6,000 employees.

Immobilien Service Deutschland is actively engaged in sustainability. In large cities, for example, employees are using cargo bikes to get to objects quickly and cleanly (no emissions). At some locations electric vehicles are being tested with the goal of making fleets fit for the future. In the garden too the air is clean. For the protection of the environment and employees, emission-free garden equipment has been in use since the company’s 35th anniversary.

In the course of the restructuring, cleaning chemicals also were converted. Since then Immobilien Service Deutschland has been working with Werner & Mertz and has scored several successes. From January 2019 to December 2020, the following reductions were achieved: 42,115 kg of carbon dioxide, 13,412 kg of crude oil and 7,132 kg of plastic. The switch to sustainable products has been enthusiastically accepted by customers, employees and job applicants alike.

Significant lowering of environmental impact

Greater satisfaction among
customers and employees

Employer brand strengthened

Lower doses yield the same quality

La Maison d’à Côté

Respect for people, Nature and palates: The “Green Heritage” of Christophe Hay

Christophe Hay, Star Chef in Maison d’à Côté

“Respect is what motivates me every time I make a decision. Respect for Nature, the land, tradesmen and producers who support us. And, of course, for the people who work with us day after day.”

Two awards, two stars
– for achievement and responsibility

With the idea of La Maison d’à Côté, Christophe Hay returned to his hometown, where he offers his guests the best from carefully chosen ingredients. On top of that, in a warm and friendly atmosphere. From the meticulous selection of local suppliers to the construction materials, Hay was able to realize his dream – a place in tune with Nature. His boldness and his skills were rewarded with a second Michelin star in 2019 and with the “Green Macaron” in 2020.

Local heritage and rare delicacies

Very attached to his hometown, Hay chose to work with unique products that come mostly from the Loire Valley. For one thing, he wanted to make the area better known, and he also wanted to preserve its culinary traditions. With his respect for Nature, resources and the environment at the back of his mind, the chef put in his own 3000-square meter vegetable garden with the help of his gardener Alain Gaillard. The meats offered in the restaurant come from his own Wagyu Farm in France, operating under the watchful eyes of Yvan Dersoir, a friend and breeder. So Hay managed to do what he had always wanted: to share with his guests an unusual cuisine that is both sustainable and ethical.

Responsibility down to the smallest detail

Since the day he returned, Hay has paid attention to the eco system, that is, with environmentally aware insulation, heat recovery systems, renewable energy and a compost heap in the garden. The “will to do it better” is reflected in every one of his decisions. That’s why he set his stake on environmentally friendly cleaning products from Werner & Mertz – out of respect for people (his coworkers) and Nature (his home).

Highly satisfied employees and guests

Fulfillment of the sustainable master plan

“Green Macaron” 2020

Products in use

Domaine Murtoli

Domaine Murtoli:
Hotel Mother Nature

Paul Canarelli’s tourism concept

“Murtoli is more than just a hotel. It is a reminder of our ancestors – heritage in harmony with Nature.”

Destination in the past
“Murtoli” – the special hotel

Beyond the borders of a conventional hotel project, Paul Canarelli brought to life a new, visionary tourism concept, an extensive tourism model that did not put the focus on people. The emphasis instead was on conserving the character of the natural landscape. Tourism that enlivens the legacy of our ancestors who worked the land.

The idea revolved around Corsica, a special travel destination. An area unique to the world. Here Canarelli made his dream come true in Murtoli, a hidden beauty, filled with the passion and will of one man. His objective is the renaissance of a heritage that respects the reminders of its age and the work of farmers, shepherds and hotelier.

With his project Canarelli makes sure that those memories are brought back to life in the preserved simple materials and the vernacular architecture. Everything in harmony with Nature. The guests of Murtoli have a one-of-a-kind experience in perfect harmony with unspoiled Nature. Despite tourism, the natural world should remain just as unspoiled.His employees see to that while caring for flora and fauna as if they were part of a nature reserve. Values such as responsibility and respect for humans and Nature influence the daily activities of everyone involved. So it was only logical for them to count on sustainable and environmentally friendly cleaning products from the Green Care Professional brand. Without residue or negative consequences for Nature. To preserve this unique heritage.

Optimize water quality

Satisfy employees and guests

Enhance sustainable image

Conserve unique biodiversity

Products in use

Maison Aribert

Bold strategy, “green” two stars: the secret recipe of Maison Aribert in Grenoble

Christoph Aribert, a Michelin star chef at Maison Aribert

“I am a cook at heart. This establishment is the starting point for a collective human adventure that goes beyond the doors of the restaurant.”

Back to the roots: Two-star chef with a unique restaurant strategy for his hometown

A brilliant career and two stars in the Michelin Guide prompted Christoph Aribert to open his own “maison”, a contemporary hotel-restaurant in Uriage-les-Bains near Grenoble. However, he didn’t want a conventional building. With thoughts of his local roots and his respect and love for the forests and the mountains of Isère, he had his house designed without compromising the environment. His efforts were rewarded with the “”Green Macaron”” prize in January 2020.

What is it exactly that makes Maison Aribert so special?

Working with the local architect Joëlle Personnaz, Aribert gave the 150-year-old building in his hometown a new lease on life. But the two of them did not just renovate the building. With a bio-climatic design, they made sure that the structure would have hardly any negative impact on the environment. Insulation with wood shavings, collecting spring water, green roof, boiler with pellets, green electricity from Grenoble. Every detail was checked for environmental friendliness, including ecological materials, ethically produced cotton for bed linens, sustainable maintenance products and cleaning agents with a biological basis.

It’s no wonder that the master of the house chose sustainable products from Green Care Professional and its parent company Werner & Mertz. The two philosophies fit together perfectly: what Werner & Mertz refers to as the circular economy, Aribert calls simply “home-grown” and “zero waste”. The compost heap, for example, is a willing recipient for anything that cannot be cooked.

An almost 100%
environmentally friendly offering

Happy and satisfied customers

Won the “Green Macaron” award

Products in use


Gesellschaft zur Förderung der Erlebnispädagogik e.V.

Open. Inspirational. Authentic. In close touch with Nature.

Annual savings:

Carbon dioxide



Dirk Markert
Facility Manager Erlebnistage Harz

“Sustainability, one of our core values, is – so to speak – in our DNA. We would like to be a role model for coming generations and an inspiration for our immediate regional surroundings and our employees. Our cleaning staff is enthusiastic about Green Care products and is happy to work with them. With the use of sustainable, ecological cleaning products we have the chance to distinguish ourselves from our competitors. We would like to see other companies and cities use Green Care Professional products because the masses decide and can make a difference.”

Gesellschaft zur Förderung der Erlebnispädagogik e.V.
Schützenplatzweg 7
38700 Braunlage

Calculate your potential resource savings!

Zimmer Tower in Lier Belgium

Zimmer Tower in Lier:
Protection and cleanliness for Belgian historical monument

Annual savings:

Carbon dioxide



The Zimmer Tower in Lier is cleaned with Green Care Professional, making it a sustainability role model

Before the Zimmer Tower got its name, it was a simple keep within the city walls of Lier in the 14th century. The current name was given to the tower in honor of the Belgian clockmaker Louis Zimmer (1888-1970), whose Jubilee clock is built into the front of the tower. It’s a very unusual clock in which 12 smaller clocks circle the large clock with 57 dials. Technically, they are not all clocks, but rather displays of information such as moon phases and tides and the time of day on all continents.

In 1960 a new pavilion was built next to the tower in order to present Zimmer’s latest masterpiece, the astronomical clock, which was prepared for the World Fair 1935 in Brussels and then exhibited in the USA. Albert Einstein was fascinated by Zimmer’s astronomical clock and congratulated the clockmaker for the clock’s mechanism. One of the clocks, for example, takes 25,800 years to complete a single orbit, which corresponds exactly to Earth’s axial precession cycle. Zimmer later expanded the clock to include a mechanical planetarium. It’s no wonder that the tower with so much history was placed under historic preservation in 1980.

Since 2019 the Zimmer museum has been cleaned with Green Care Professional products from Werner & Mertz. It’s a special challenge since too much moisture could damage the clocks. That’s why we adapted the work processes and cleaning methods in close cooperation with the responsible parties so we could satisfy all the requirements.

Our success in brief

  • switch from traditional products to Green Care Professional
  • development of specially adapted work processes and cleaning methods


Built before 1425

Commune and municipality in the
Belgian province of Antwerp

Products in use

Antwerp Central Station

Antwerp Central Station:
Belgium pride with new brilliance

Annual savings of Antwerp Central Station:

Carbon dioxide



Antwerp cleans with Green Care Professional,
making it a sustainability role model

Antwerp Central Station boasts an indefinable architectural style that seamlessly combines elements from the present and the past. The railway station’s unique structure has made it a top candidate as “the most beautiful train station in the world”. For Belgium it is a multifaceted reminder of the tiny nation’s innovative influences on the railway industry during its earliest days.

Built in the glory days of Belgian train travel, Antwerp Central – also known as the “Middle station” – made commuting much easier for Belgians. Belgium was the first nation in Europe with a public railway established in 1835, just a few years after the country had gained independence. The terminal in Antwerp played a key role in the first rail route. In recognition of its importance, the original station made of wood between 1895 and 1905 was replaced with the current version.

Today the central station extends over four especially spacious levels. To the credit of the team responsible for the renovation, the station’s original functions were retained and a few historic elements were prominently incorporated. It’s one of the world’s most beautiful train stations, which we hope will be maintained for centuries to come. To that end, Green Care Professional came into the picture. Particularly dirty places, which had been repurposed by many as urinals, have been cleaned with a special BIOBACT solution since 2019, resulting in a significant improvement for the noses of passengers and employees.

Our success in brief

  • cost-efficient cleaning of “urinal spots”
  • increased cleanliness and an improved smell
  • greater satisfaction of travelers and station employees


Railway station buildings
from the years 1899 and 1905

One of five provinces
in the Belgium region of Flanders

14 platforms

540 trains

Products in use

Chirohuis Heibrand Belgium

Chirohuis Heibrand: better quality for Belgium’s youth

Annual savings of Chirohuis Heibrand Westmalle:

Carbon dioxide



Chirohuis Heibrand Westmalle, the second largest nature reserve in Belgium, cleans with Green Care Professional, making it a sustainability role model.

For others, scouting was synonymous with adventures in the forest, cooking over an open fire and spending the first weekend away from parents, but in Belgium it’s still Chiro Flandern. More than 70 years ago the youth organization purchased its own property and created a retreat for young Belgians. The site has grown to accommodate up to 248 overnight guests.

The nature-loving and forward-thinking Chiro Flandern organization doesn’t just talk about the importance of sustainability and ecological values, but lives them as an example to the children. When governmental funding was cut in 2019, the management of Chiro Flandern asked us for help in reducing costs, but not at the expense of quality and the environment.

Thanks to the good cooperation and our longstanding expertise, we achieved our first success with just a few measures. By switching to the more efficient cleaning products of our Green Care Professional brand, we were able to reduce costs and simultaneously increase quality in hygiene. When such measures are introduced, employees are often neglected. However, getting them involved boosts motivation and contributes to success. With Chiro Flandern, for example, we could improve quality because the employees were involved and trained right at the beginning.

Our success in brief

  • cleaning costs within budget
  • better environmental compatibility
  • happier personnel with more compatible products
  • improved hygiene increased guests’ satisfaction

Second-largest natural reserve in Belgium

Area: 17.3 acres

Products in use


shines in heroic splendor!

Annual savings of the city of Ghent:

Carbon dioxide



Ghent, the second largest city in Flanders, cleans with Green Care Professional, which makes it a role model in sustainability.

Green procurement in Ghent

Since 2008 the City of Ghent has followed an action plan for sustainability (“Ghent 2020”), which includes more than 105 actions and initiatives to make Ghent a more sustainable city, including sustainable procurement processes. Initiated in 2012, the first procurement strategy with a focus on sustainability was renewed and signed by the city’s mayor in 2014.

In recent years Ghent has worked steadily to make its municipal cleaning services sustainable and that includes the use of integrally sustainable cleaning products. Ghent purchases products that satisfy the EU Ecolabel criteria and was the first city to introduce “Cradle to Cradle®” certified products for the cleaning of its buildings and facilities. More than 340 sites in the city (office buildings, schools, museums, etc.) use the municipal cleaning services. For many other public facilities, the City of Ghent acts as the central contact for procurement.

About the City of Ghent

Ghent developed from a Celtic settlement where the Scheldt and Lys rivers flow together. In the Middle Ages, the thriving textile industry made Ghent one of the largest and most important cities in Europe. The flax and linen industry and the city’s staple rights for grain also contributed to Ghent’s wealth. After a brief period of Calvinism, the city deteriorated visibly until its return to prosperity at the end of the 18th century when Ghent became one of the first industrialized cities on the European mainland.


Second-largest city in Belgium

Capital of East Flanders


Area: 156.2 km²

Population: > 250,000

Calculate your potential resource savings!

Products in use