Don't use cheap clumping litter
It may take a little while to get used to for both of you
Get some of those mats that catch the litter

Some of my cats like it  some are scared by it.

I think you should leave it out without having it on for some time so
they get used to it. I know a lot of people who really like them. I've
never seen one in action.

We had a LitterMaid for years until it finally wore out.  Two cats then,
both used it fine.  It's got a sensor so it won't start sweeping while a
cat it using it.  Seems to work since we never knew of an instance of
that happening.  You do have to use a good grade of non-clumping litter
and keep an eye on the fill level of the catch box.  And occasionally,
you have to take it apart and clean the entire unit.  But overall, we
liked it.

We now have a PetMate version of the LitterMaid and don't care for it
much.  It's effective but you have to line the catch tray with little
bags available only from a store that sells PetMate refills - no more
using  a self-disposable catch box like LitterMaid.  When this one goes
to "the great litterbox in the sky", we'll get another genuine LitterMaid.

Sam