Where can I find Baking soda in Boningen?

Baking soda can also be found in these cities:

Aarau Aesch Balsthal Bubendorf Buchs Egerkingen Egolzwil Erlinsbach Gelterkinden Gränichen Herzogenbuchsee Langenthal Liestal Lostorf Murgenthal Oberkirch Oensingen Oftringen Olten Reiden Rothrist Schöftland Schönenwerd Sissach Suhr Sursee Unterentfelden Zell Zofingen

You can also find this in Boningen:

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