Where can I find Heavy duty detergent powder in Merchweiler?

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

Bous Freisen Illingen Marpingen Nalbach Neunkirchen Püttlingen Saarbrücken Saarlouis Saarwellingen Sankt Ingbert Sankt Wendel Schmelz Schwalbach Spiesen-Elversberg Völklingen Wadern Waldmohr

You can also find this in Merchweiler:

Everything From Milk Baking Mixtures Cream Stiffener Spreads Savory Food For Diabetics Menus With Meat Fruit Spritzers Filter Coffee Baguette Roll Salt Sticks