From: (Steve G)

To my knowledge, there aren't ANY "hairball foods" that have additives in
them with the express purpose of controlling hairballs.

Your knowledge is incomplete. Iams, at least has a 'patented fibre
source' in their anti-hairball food.

No, "psycho"---yours is. I'm waiting for you to make the argument that
everything in food is an "additive". The post was insinuating that additives
such as petromalt, etc. may be in hairball controll foods. Most all hairball
foods use higher levels of fibre as their "cure".