Where can I find Heavy duty detergent liquid in Fernwald?

Heavy duty detergent liquid 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:

Cream Products Gelatine Crispbread Cornflakes Antipasti Fund Pepper Dumplings Sesame Roll Mayonnaise And More