Are wooden spoons sanitary?
If they're cared for properly, absolutely.
Wash them [by hand] in warm soapy water after using them and toss them in a drying rack to dry. Good as new.
Avoid letting them soak in water or with dirty dishes for days. Don't put them in a dishwasher.
When they start to dry out, you can reapply some finish. I sell some spoon finish in my shop, or a cutting board oil would work great.