Where can I find Baking soda in Richenthal?

Baking soda can also be found in these cities:

Aarau Balsthal Buchs Egerkingen Egolzwil Gränichen Herzogenbuchsee Huttwil Langenthal Lenzburg Lostorf Malters Menziken Murgenthal Oberkirch Oensingen Oftringen Olten Reiden Reinach Rothrist Ruswil Schöftland Schönenwerd Sempach Seon Suhr Sursee Unterentfelden Wolhusen Zell Zofingen

You can also find this in Richenthal:

Desserts Dessert Baking Mixes Cake Glaze Peanut Butter Ice Cream Rice Dishes Vegetable Juices Instant Iced Coffee Cheese Roll Canned Fish