Cleaning empty stock cars

When a carload of livestock reached its destination, what was the procedure once the stock was out of the car? Did the RR have to clean it? Whoever cleaned it, what was done? Before livestock left the rails, I saw stockcars used to move other commodities, even crates of tomatoes. Did those cars get additional treatment?

Believe it was the RR that washed out the cars before reuse,there were some consignees that were required to clean up
or dispose of Dunnage(lumber or cardboard used to protect the product)after the car was empty.

I think they just re-used the stock cars as is. I know the CB&Q double decker pig cars used to be rolling cesspools!

Generally, the cars were cleaned out using powerful hoses, spraying from the outside through the lower slats of the sides. The water used was usually mixed with a cleaning mix (bleach? chlorine?) that left a white stain on the lower part of the car over time...part of the reason some railroads painted the lower part of their stock cars white.