We have brought coffee, cereal, peanut butter, jelly, vacuum packed tuna (Don't ask why - I don't know), splenda, pasta that sort of stuff and have never been asked about or charged anything. I think customs pretty much knows if it is for personal use or not. This way we also have room for the stuff we bring back like...rum! I think it is very worth the effort to bring dry goods if you plan on eating in at all.