Ooop!! I forgot your dry climate!! Watch out for shrinking, so....
How do you keep it moist? (Not a problem we have envountered with the Irish climate LOL)
Mostly with oils, rather than sprays, which are OK, but I prefer something with a little substance for my soild woods.
Old English and Murphy's Oil Soap come to mind...and there is also a beeswax...Howard's, I believe is the name of it.