“Sustainability does not necessarily have to be associated with bitter sacrifices”

Today’s guest in the executive interview is not satisfied with a decent pin on his suit to advertise his company. No, he adorns himself with a green stuffed animal in the place where others have a handkerchief: a frog. Because that’s what his company, Werner & Mertz, stands for: a frog prince adorns the shoe polish Erdal, and the green frog the cleaning agents that were introduced in 1986 – and account for 80 percent of sales, which last year were almost 540 million euros.