Where can I find Heavy duty detergent powder in Fernwald?

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

Bad Nauheim Butzbach Giessen Langgöns Lich Lollar Mücke Münzenberg Nidda Pohlheim Reiskirchen Rockenberg Wettenberg Wetzlar

You can also find this in Fernwald:

Dental Care Depilation Lotion Lubricant Rheumatism Product Skin Protection Carotene Garlic Gels Delicate Detergent Machine Dishwashing Detergent