Problem mounting new Sandisk 1TB USB drive

I have a new Sandisk 1TB thumb drive, USB-A on one end, USB-C on
the other.
If I plug it into my ubuntu laptop, it mounts fine and works.
If I plug it into my fbsd box (13.2-RELEASE-p8 GENERIC amd64),
it shows up:

usb_msc_auto_quirk: UQ_MSC_NO_GETMAXLUN set for USB mass storage device SanDisk SanDisk 3.2 Gen1 (0x0781:0x55b1)
usb_msc_auto_quirk: UQ_MSC_NO_PREVENT_ALLOW set for USB mass storage device SanDisk SanDisk 3.2 Gen1 (0x0781:0x55b1)
ugen7.2: <SanDisk SanDisk 3.2 Gen1> at usbus7
umass0 on uhub6
umass0: <SanDisk SanDisk 3.2 Gen1, class 0/0, rev 2.10/1.10, addr 2> on usbus7
umass0:  SCSI over Bulk-Only; quirks = 0x8100
umass0:8:0: Attached to scbus8
da0 at umass-sim0 bus 0 scbus8 target 0 lun 0
da0: <SanDisk SanDisk 3.2 Gen1 DL17> Removable Direct Access SPC-4 SCSI device
da0: Serial Number A2003B9717F0A406
da0: 40.000MB/s transfers
da0: 954240MB (1954283520 512 byte sectors)
da0: quirks=0x2<NO_6_BYTE>
$ ls -lt /dev/da0*
crw-rw----  1 root  operator  0xc7 Jan  9 20:59 /dev/da0s1
crw-rw----  1 root  operator  0xcc Jan  9 20:59 /dev/da0

but it won't mount:

# mount.exfat /dev/da0s1 /mnt/memstick
FUSE exfat 1.4.0 (libfuse2)
fuse: failed to open fuse device: No such file or directory
$ gpart show /dev/da0
=>        63  1954283457  da0  MBR  (932G)
           63        7489       - free -  (3.7M)
         7552  1954275968    1  ntfs  (932G)

Am I doing something wrong, or does the factory MS formatting
need to be trashed and redone?

If it needs to be reformatted, what's the proper procedure for a
>32G device?  I show a newfs and newfs_msdos in /sbin, but no 
newfs_ntfs.

Thanks,

Gary