

Renno Guitjens (51) has been working as sales manager at Werner & Mertz Netherlands for over a year. Before that, he was active at MTS Euro Products for 16.5 years and therefore gained a lot of experience in the cleaning industry.
The 'Professional Division' of the family business Werner & Mertz, founded in 1971, offers customers high-quality hygiene solutions for use in professional cleaning.
“Our established brands are Green Care Professional and Tana Professional, which are supported by skilled and motivated employees,” Renno says. “We are driven by our wish to make a sustainable lifestyle achievable for the majority; even beyond the boundaries of our brands”.
“Green Care Professional stands for high-quality sustainable cleaning products in harmony with nature. In our holistic interpretation of cleanliness, we see both the results of cleaning processes and the benefits of clean products for people, animals and the environment”.
Werner & Mertz can be regarded as a pioneer in ecological cleaning. The 150-year-old family business, headquartered in Mainz, Germany, introduced an eco line in its product assortment thirty years ago.
Renno is a proud ambassador of the company, which has 1,200 employees. “This is a family business, now in its fifth generation, that mainly uses its resources for research and further development,” he says. “Circular entrepreneurship comes first”.


“1nergiek works with microfiber, environmentally friendly cleaning agents and materials and packaging that we can reuse. This significantly reduces the use of chemicals and limits our waste stream,” says Guido Wajer, quality manager. “For the cleaning agents we use, we use as many products as possible with the Cradle2Cradle® label and EU Ecolabel. This indicates that the agents, the packaging and the production are fully biodegradable and can be usefully reused in another product”.
Werner & Mertz supplies cleaning agents for, among other things, interiors, sanitary facilities, floors, dishwashing and linen washing. The company is active in virtually all sectors, from industry to hospitality and from government to schools and healthcare institutions.
“The way of working to produce as sustainably as possible is in the DNA of our company,” says Renno. “Raw materials, energy, water and packaging are our pillars.”
Werner & Mertz supplies cleaning wholesalers such as Hijman, who in turn is the house supplier of 1nergiek. “1nergiek consciously chose Werner & Mertz because of the products,” Renno explains. “However, with Hijman's permission, there is direct contact with 1nergiek, where quality manager Guido Wajer is our contact person. This is also done at his request, because he likes to know the background of the products and be able to quickly switch when there are questions or advice”.
“1nergiek consciously chooses sustainable products with a good experience and price. This combination is excellent. In the cost structure of cleaning companies, chemistry, materials and machines account for only five percent. The vast majority are personnel costs. However, 1nergiek is always interested in developments. It is great that the company dares to make choices in this area”.
A clean environment starts with people who are involved, take responsibility and know what is needed. That is how we like to work together. Curious what 1nergiek can mean for your organization?