For most of our history, collections worked the obvious way: a customer accumulates empties, tells us, we send a truck, we load, we leave. It works. It is also, once you look at it properly, an extraordinarily wasteful way to move a light, bulky object.
What was wrong with it
Three things, and we had made peace with all of them for years.
- Partial loads. A customer generating 40 empties a month who calls us when they have 15 gets a truck movement for a third of a trailer. The freight cost per container triples.
- Dock time. Loading 15 containers by forklift with a driver waiting is an hour, plus the wait to get onto the dock. On a corridor run that is an hour not spent on the next stop.
- Weather. Containers accumulate outdoors because there is nowhere else. By collection day, a meaningful share have taken on water, lost labels or frozen, and they grade a full step lower than they would have on the day they were emptied.
That last one is the expensive one, and it was invisible to us for years because we only ever saw containers on collection day.
The change
In early 2024 we put a 53-foot trailer at a chemical distributor in Wilmington and left it there. They load it themselves with their own forklift, at their own pace, as containers empty. We collect it when it is full — roughly every three weeks — and swap in an empty trailer on the same movement.
| Scheduled collections | Drop trailer | |
|---|---|---|
| Containers collected per year | 486 | 511 |
| Truck movements per year | 26 | 9 |
| Average load size | 19 units | 57 units |
| Driver dock hours per year | 31 | 6 |
| Grade mix: A or B | 54% | 79% |
| Grade mix: C | 46% | 21% |
| Average paid per unit | $31 | $44 |
| Total paid to customer | $15,066 | $22,484 |
Look at the grade mix rather than the movement count. Containers went into a dry trailer within a day of being emptied instead of standing in a yard for three weeks. Labels survived. Nothing filled with rainwater. Nothing froze. The customer received 49% more money for essentially the same containers, and our cost per collected unit fell by more than half.
Where it works and where it does not
It needs three things: volume above roughly 40 empties a month, space for a 53-foot trailer with room to manoeuvre, and a forklift on site. Miss any one and the arrangement does not pay.
It works particularly well for chemical distributors, food manufacturers running seasonal contracts and large municipal yards. It does not work for construction sites, which move; for farms, which are seasonal and rarely have the space; or for anybody generating fewer than about 25 a month, where scheduled corridor collection remains the right answer.
What it did to our radius
Our standard collection radius is about 150 miles. With a drop trailer, the economics stretch to roughly 210, because the movement is a full trailer rather than a partial one and there is no dock time at either end.
That has pulled in customers in central Pennsylvania and northern Maryland who were previously outside anything we could justify. Three of the five largest sellers to this yard are now drop-trailer accounts, and none of them would have been viable on a scheduled route.
The environmental version
Twenty-six truck movements became nine for the same volume of containers. That is a real reduction in freight emissions, and unlike a lot of logistics sustainability claims it is not an attribution argument — it is seventeen trips that did not happen.
The larger effect, though, is the grade mix. Containers that arrive as Grade B go back into service; containers that arrive as Grade C frequently end up at the granulator. Moving 25 percentage points of a 500-container stream from C to B is roughly 125 containers a year that stayed containers instead of becoming pipe. At 58 kg of CO₂e difference per container, that is about 7.2 tonnes — from parking a trailer.