Hi

I have found in my 2 years of on/off this site that most are, but just be mindful since member are allowed to post their items on there as well. If you are using a mobile I find it easy to use the scan feature and scan the barcode. However, this is not always the case when out to eat or what not. I normally add what I think is best in terms of the item from the choices, and then later look it up online to see if I need to adjust.
Good luck with everything.