Option to make it so a product cannot be returned?

[Courtright]

I am asking this because we sell Gift Certificates and the reason is mostly for employee theft, which always seems to be many retailers biggest headaches.  The way I have done Gift Certificates is I sell them by barcode and we seize them once being used.  If it is allowed to be returned there is a way they can still use it to take product.  Can I make a specific item "unreturnable"?

Thanks.

[ronaldrwl]

Are you selling Gift Cards or something else?  There is no option to make an item non-returnable.  But I want to be clear on what you are talking about.  In the software there is Coupons and Gift Cards.