Archival materials misleadingly accessible via ILL
When searching my institution's PrimoVE instance with the "Add results beyond your library's collection" box checked (it is checked by default), users are getting search results that include archival and special collections materials from other institutions. Users who log in can request these items via EZBorrow or ILL, but this is misleading because archival and special collections materials do not circulate and cannot be checked out or delivered to another library. These requests will always be denied and cause some confusion for users and library staff. We're concerned that users will be at best confused by having this option seemingly available for non-circulating materials, and at worst think our catalog is confusing, defective, or misleading and possibly be angry with the librarians who handle these requests.
Is there any way to turn off or hide the "How to get it" service only for archival and special collections materials from other institutions? Or, can we add some kind of note to archival materials from outside our institution indicating that despite what the UI presents, these items cannot be requested and users should directly contact the host institution for access or digitization?