A few stations are still open, per other posters.

But if all it takes is one insect SOMEWHERE on a vehicle, then it's a lost cause. I'm not aware that (1) all "illegal" fruit was found, (2) all "illegal" fruit was a problem, (3) all cars were put through a washer to remove insects from tire rims and elsewhere, (4) oranges purchased in NV were grown in NV rather than being imported from CA, and (5) so forth.

I always tended to bypass the stations (easily done in most cases) just to avoid answering questions. Once, I was asked about firewood.

The main mission of the ag. stations appeared to involve produce truck inspections.

Indeed, a dirty car tended to get more attention, like after a transcon. road trip.

Now, before 1966, the stations handed out free CA road maps. That was nice.