Where can I find Heavy duty detergent powder in Dienethal?

Heavy duty detergent powder can also be found in these cities:

Altendiez Bad Ems Bendorf Boppard Diez Hadamar Hundsdorf Koblenz Lahnstein Lautert Montabaur Nassau Neuwied Schwall Waldesch Winden (Rhein-Lahn-Kreis) Wirges

You can also find this in Dienethal:

Ice Cream Desserts Meat Products Lemonades Instant Coffee Pumpkin Seed Roll Canned Meat Frying And Frying Fat Seasoning Sauces Absinthe Aroma Pack Soups