If you’ve spent any time on a warehouse floor in the Southeast, whether you’re moving HVAC parts in Charlotte or plumbing supplies in Birmingham, you know that the picking process is the heartbeat of your operation. When it’s smooth, orders fly out the door and customers are happy. When it’s messy? Well, you’re looking at mispicks, delayed shipments, and a team that’s exhausted from walking five miles a day just to find a single brass fitting.
At WAC Solution Partners, we talk to a lot of owners and ops managers who feel like they’re constantly fighting an uphill battle with their warehouse efficiency. Often, the instinct is to look for a "magic button" or a high-tech gadget to solve the problem. But before we ever talk about tech, we have to talk about the process.
If your physical workflow is broken, no amount of software can fix the underlying chaos. Today, let’s go back to the basics. Here are seven common mistakes we see in inventory picking and the practical, process-oriented ways you can fix them.
1. The "Walking for a Living" Layout
The single biggest time-waster in any distribution center is travel time. If your pickers are spending 60% of their day just walking from one end of the building to the other, you aren’t running a warehouse; you’re running a track meet.
The Mistake: Storing items based on where they "fit" rather than how often they are sold. This often leads to your high-volume items being tucked away in the back corner because that’s where the empty pallet rack happened to be three months ago.
The Fix: Implement a "U-Shape" flow or a straight-through flow based on velocity. You should group your "A" items: the ones that make up 80% of your orders: as close to the packing and shipping station as possible. This minimizes the distance a picker has to travel for the most common requests. Keep your "C" items (the slow movers) in the back or on the highest shelves.
2. Relying on "Tribal Knowledge"
We’ve all met the "Warehouse Legend": that one employee who has been there for 20 years and knows exactly where every single SKU is located, even if it’s not labeled.
The Mistake: Relying on the memory of your veteran staff instead of a standardized system. If your best picker goes on vacation (or worse, retires), your entire operation slows to a crawl because nobody else knows where the 1/2-inch PVC elbows are hidden.
The Fix: Create a logical, alphanumeric grid for your warehouse. Every aisle, rack, shelf, and bin should have a clear, visible label. A new hire should be able to walk in on Day 1 and find a specific item just by following the coordinates on a pick ticket. If you need a refresher on how to structure these processes, our tips and tricks section has some great foundational advice.
3. Using the Wrong Picking Strategy for Your Volume
Many small-to-medium businesses start out with "Discrete Order Picking": which is just a fancy way of saying one person picks one order at a time from start to finish.
The Mistake: Sticking with discrete picking as your volume grows. While it’s simple, it’s incredibly inefficient for high-volume distributors. If three different orders all require the same industrial fastener, your picker shouldn't be walking to that bin three separate times.
The Fix: Evaluate your order profiles. If you have many small orders with overlapping items, consider Batch Picking. This allows one picker to grab all the items for multiple orders in a single trip. If your warehouse is large, look into Zone Picking (or "Pick and Pass"), where employees are assigned to a specific area and only pick items within that zone before passing the order to the next area.
4. Neglecting the "Golden Zone"
Efficiency isn't just about speed; it's about ergonomics and safety. If your team is constantly bending over to the floor or climbing ladders for heavy items, they’re going to get tired and make mistakes.
The Mistake: Placing heavy or high-frequency items in awkward physical locations.
The Fix: Apply the "Golden Zone" rule. The area between a person’s shoulders and waist is the most efficient and safest place to pick from. Your most popular items: and certainly your heaviest items: should live in this zone. Save the floor-level bins for light, bulky items and the high-reach shelves for things you only sell once a quarter. This reduces physical fatigue and speeds up the picking motion significantly.
5. Poor "Slotting" Logic
Slotting is the science of where you put your stuff. It sounds simple, but it’s easy to get wrong.
The Mistake: Putting similar-looking items right next to each other. If you sell three types of valves that look identical except for a tiny internal seal, and you store them in adjacent bins, a picker in a hurry is almost guaranteed to grab the wrong one eventually.
The Fix: Break up the visual monotony. Place items that look similar in different aisles or at least several bins apart. Use physical cues, like different colored bins or clear dividers, to help the eye distinguish between products. This is especially important for manufacturing businesses where raw materials might look very similar but have different specifications. You can find more on managing these complexities in our manufacturing category.
6. Skipping the Verification Step
In an effort to be fast, many operations skip a formal "double-check" process before an order is boxed up.
The Mistake: Assuming the picker got it right the first time. Mispicks are expensive: not just because of the shipping cost to fix them, but because of the damage to your reputation and the loss of customer trust.
The Fix: Implement a dedicated packing/verification station. Even if you aren't using scanners, a second set of eyes (or a different person) should verify the items against the packing slip. This doesn't have to be a slow process. A simple "check-off" system where the packer initials the quantity can reduce errors by a surprising margin. It’s a small investment in time that pays massive dividends in client stories where accuracy saved the day.
7. Letting "Dead Stock" Clog the Arteries
Your warehouse has a finite amount of space. If that space is filled with dust-covered items that haven't sold in two years, it’s making your pickers work harder.
The Mistake: Treating all inventory as equal. Every square foot of your warehouse has an "opportunity cost." If a slow-moving item is taking up a prime "Golden Zone" spot, it’s actively costing you money.
The Fix: Periodically "purge" your picking areas. Identify your "dead stock" and move it to a deep storage area or consider a clearance sale to get it out of the building. This clears up the "arteries" of your warehouse and makes the picking paths shorter and more logical for the items that actually move the needle for your business.
Bringing it All Together
Fixing these seven mistakes doesn't require a massive capital investment or a team of consultants. It requires a commitment to looking at your warehouse as a living, breathing system.
Whether you’re the VP of Operations or the Owner-Operator, take a walk through your warehouse tomorrow morning. Watch your pickers. Are they walking too much? Are they hunting for labels? Are they bending over to grab your top-selling heavy items?
Start with one fix at a time. Maybe start by relabeling one aisle or re-slotting your top 10 items. As your process improves, you’ll find that your team is less stressed, your customers are happier, and your bottom line looks a whole lot healthier.
If you’re looking to dive deeper into how to structure your business for growth, I highly recommend checking out some of the leadership insights from Gary Jensen or Michael Pruet. They’ve spent years helping distributors across the South navigate these exact challenges.
Remember, a more efficient warehouse isn't just about working harder: it's about working smarter with the space and the people you already have. Happy picking!
