Does Your Reefer Need a Washout Between Loads? What FSMA — and Your Produce Buyers — Require

Short answer: yes. Federal law (the FDA’s Sanitary Transportation rule) requires it, and the receivers taking your berries and avocados will turn away a trailer that isn’t clean. Here’s what the rule actually says, what a real washout covers, and when a quick rinse won’t cut it.

What the FSMA Sanitary Transportation rule requires

The FDA’s Sanitary Transportation of Human and Animal Food rule (part of FSMA) exists to stop contamination in transit. In plain terms, for anyone hauling food:

• The trailer and every surface the food touches must be cleanable and in sanitary condition — no corrosion, no flaking, no residue.
• Trucks and containers must be cleaned between loads so the last load can’t contaminate the next.
• Reefers need working temperature control, and a refrigerated trailer must be pre-cooled before it takes on a new load.
• Both the shipper and the carrier share responsibility for sanitary conditions — it isn’t only the driver’s problem.

Residue, odor, or moisture left behind from a previous load is exactly what the rule is written to prevent.

Why produce is less forgiving than most freight

Berries, avocados, strawberries — high-value, sensitive, and usually headed straight to a retailer or packer with strict food-safety audits. A trailer that hauled fish, onions, or a leaky pallet last week can taint a produce load with odor, mold, or residue you won’t catch until the receiver opens the doors. Then it’s a rejected load, a freight claim, and a buyer who remembers.

What a real washout covers (vs. a quick rinse)

A rinse just pushes water around. A proper food-grade washout gets the trailer actually clean:

• Interior wash — walls, floor, ceiling, and the front bulkhead where debris hides
• Degrease — cuts the grease and film a rinse leaves behind
• Deodorize — kills the smell from the last load so it can’t transfer
• Mold treatment — for trailers that sat wet or hauled something that spoiled
• Dry & inspect — a wet trailer grows exactly what you’re trying to remove

When a rinse isn’t enough

Get a full washout when your last load left residue or smell (meat, fish, produce, chemicals); the reefer sat loaded or wet; you’re switching to an organic, kosher, or audited buyer; or the receiver requires a wash certificate before they’ll unload.

The math is simple

A washout is $30. A rejected produce load — plus the claim and the lost account — runs into the thousands. Clean is cheaper.

General guidance, not legal advice — responsibilities under the Sanitary Transportation rule depend on your role (shipper, carrier, receiver). When in doubt, wash it out.