It's basically impossible not to buy Shell products. Even if you don't buy from Shell directly, chances are there are products of Shell in the products you buy. And even if that isn't the case, chances are the factory the product is made uses a lot of Shell products and so do all the factories that made the components and so do the shipping companies that shipped all the stuff around the world.

Shell is freaking huge, they are everywhere and one of the biggest companies in the world. They don't just make gasoline, they have so many products and have their claws in a lot of industries.