Under that definition, Benefiber would be considered gluten free. Benefiber only recently started using wheat dextrin instead of hydrolyzed guar gum. The change was made to increase the amount of fiber. For most of the five years your husband took Benefiber, it contained the guar gum, which is gluten free.
Hire a sheriff or process server to serve the divorce papers on your spouse. You can use the sheriff or a server in your county if your spouse lives there. If he lives in a different county, you will need to have a sheriff or server in that county serve the papers.
This became a burden on law enforcement, so the legislation was changed. Now, in many states, any US citizen that is not a party to the case, over the age of 18, and residing in the state where the matter is to be tried can serve papers. Keep in mind that process serving laws differ from state to state and may change.