Reading ingredient labels is the key.
I have successfully managed to avoid soy of any form for a year here in Sweden, where it’s hidden in the tiny labels of a surprisingly large number of products.
Most of the commercial chocolate bars being sold contain soy lecithin, capsule coffee, same goes for BCAA. There is soy-less BCAA being sold here, in the form of sun-seed flower lecithin. Make sure to check your vitamins aswell if they contain any.
Heck, even the common chewing gums, such as Extra contains soylecithin. Stimorol thankfully lacks this.