We run eleven closed-loop programs at our Oak Creek yard. Two of them are spectacular. Six are quietly excellent. Three break even. None lose money for the customer, but we've passed on at least a dozen prospects where the math just wouldn't pencil. Here is what makes the difference.
The variables that matter.
- Cycle time. Round-trip days from outbound to return-to-yard.
- Geography. Where is the outbound going, and where are the empties piling up.
- Volume. Boxes per week, per route.
- Box durability. How many trips before regrade drops it out of spec.
- Receiving cooperation. Will the receiver hold empties for pickup, or do they get crushed and trashed?
When closed-loop works.
- Cycle time under 30 days.
- Routes inside our 300-mile delivery radius.
- At least 200 boxes per route per month.
- Triple-wall, lidded, paired-pallet outbound (the durable spec).
- Receiver agrees to stage empties for backhaul pickup.
When all five line up, we typically hit 88–94% reuse rates and customers see net packaging spend drop 35–55% within a year.
When closed-loop doesn't.
- Cycle time over 90 days. Boxes warehouse for too long. Compression creep degrades them before they ship again.
- One-way long-haul (say, Milwaukee to Atlanta) with no backhaul. The deadhead miles eat all the savings.
- Sub-50 boxes per route per month. The trucking math collapses.
- Single-wall or non-lidded outbound. The box is dead after one trip anyway.
- Receiving facility that won't cooperate on staging. We've seen entire programs fail here.
The volume threshold.
A back-of-envelope rule we've refined: the program needs to support roughly 500 boxes per route per month for the freight math to clearly beat one-way new-box procurement. Below that, the savings are marginal and probably not worth the operational complexity.
A real example.
One of our customers ships from a co-pack facility in Pleasant Prairie to a retail DC in Chicago. About 1,200 boxes per month, 38-mile route, two-day cycle. We've been running this program for 28 months. Reuse rate: 91%. Average trips per box before retirement: 5.2. Net packaging cost reduction vs new-box baseline: 51%.
By contrast, a prospect a few years back wanted to run a closed loop from Milwaukee to Houston. Five-day each way, 70+ day round-trip including warehouse staging, 320 boxes per month. We declined. The freight math wouldn't work. We told them to use new boxes and recycle locally.
Closed loops aren't magic. They're a freight math problem dressed up in sustainability language. When the math works, they're beautiful. When it doesn't, they're a slow leak.
How to scope a program with us.
- Send us your top 3 outbound routes — origin, destination, monthly box count.
- Tell us your current box spec (wall, footprint, lid, pallet).
- Tell us your cycle-time target (or what you currently see).
- We'll model the math and come back with a yes / no / suggest-changes within a week.
- If we say yes, we draft a 90-day pilot. We always start with a pilot.