How do I remove mothball odors from a car?  The car has upholstered
seats.  I'm told that mothballs were kept in the trunk for years to
deter squirrels while the car was in storage.  Now the passenger cabin
reeks of mothballs.  Baking soda has not helped.  Neither has an
odor-eliminating spray (Febreze or some such).  Please only give
inexpensive suggestions (ideas cheaper than professional cleaning).

Put a large mesh bag of fresh cedar chips (or shavings) in the trunk
and a couple of smaller ones under the seats. This will take some time
but it works. Give it a try then come back and let me know.

tutuzdad-ga

That's funny the first thing I thought of was, "Great, from Mothballs
that smell like Grandma's house to a Gerbil Cage!!!"

From what I hear, gerbil cage smell would be a great improvement.  I
have not actually smelled the car for myself (it's my sister's) but am
looking forward to that experience over the weekend.  :)

Thanks for the suggestion, tutuzdad!