Chapter 12: Pesticide Transport and Storage

Transport regulations

Beyond good practice, there are legal requirements. The federal Department of Transportation (DOT) has designated many chemical compounds as hazardous materials, precisely because they would pose an unreasonable risk to health, safety, and property if spilled during transport. When you're transporting hazardous materials, you may need to complete hazardous material training beforehand, and carry emergency response information and shipping papers in the vehicle, placard the vehicle, and hold a Commercial Driver's License (CDL). Whether these rules apply to you depends on the specific pesticide and the amount you're moving.

Checking a product's transport status

So how do you find out if your product is regulated? Check Sections 14 and 15 of the SDS — the Transport and Regulatory Information sections — for DOT regulations. Because the requirements can hinge on quantity, and because you want to be sure you're reading the right document, confirm that the EPA registration number on the SDS matches the one on the product's label. When in doubt, the manufacturer or your distributor can also tell you.

Storage: benefits and the basics

How you store pesticides scales with how much you keep. Small quantities may go in an existing multi-use building, but large amounts call for a separate building just for pesticides. If a separate building isn't possible, the storage area inside a shared building needs clearly defined boundaries and warning signs, and it must be kept locked when not in use — especially to keep out children and other unauthorized people. A well-designed storage area earns its keep in several ways: it limits access (protecting people and animals from exposure), allows better inventory control, reduces the chance of environmental contamination, prevents damage from temperature extremes and excess moisture, safeguards against theft, vandalism, and unauthorized use, and lets fire departments know where the products are.

Siting and security

Location matters. A storage site should not be prone to flooding, and a good rule is to keep it at least 100 feet from wellheads, waterways, and other sensitive areas — including storage for food, seed, or feed — though some states require a different setback distance. The area should always be secured, locked if possible, and inaccessible to anyone but authorized personnel; security lighting and an alarm system aren't required but help. Good security isn't just about safety — it avoids costly losses. An incident like a spill or theft can trigger lawsuits and expensive remediation, so a well-planned facility safeguards employees and the community, reduces insurance costs, and prevents or reduces theft and vandalism.

Designing the storage area

Several design features make a storage area both safer and easier to work in. Nonporous floors let spills be cleaned up easily and thoroughly — the opposite of bare soil, which lets a spill soak in. Bright lighting helps you read labels, spot damaged containers or spills, and clean up. Ventilation aids temperature control and keeps harmful vapors from building up, but there's a crucial detail: fans or ducts must direct air to the outside, not into another room in the same structure. For shelving, metal beats wood, because spills on wood soak in and are difficult or impossible to clean. And plastic or metal bins or trays are smart for holding liquid-pesticide containers so small leaks get caught — with the caveat that some pesticides react with metal, so check the label before assuming a metal shelf or bin is best.

What you can and can't store

The contents rule is strict. Store only pesticide containers, measuring or application equipment, and spill cleanup items at the site, and never store pesticides with food, feed, seed, plant propagation material, fertilizers, or PPE. If you ever want to use the area for something else, you must first remove all pesticides and thoroughly clean it. Before storing any product, read the label's storage statements and check that the container is tightly sealed and undamaged with an intact, legible label. If a container is damaged or leaking, either put it inside another container (a plastic bag works for dry formulations) or transfer its contents to a container that held the same product and still has an intact label — and inspect your containers regularly.

Good inventory habits prevent waste and hazard. Since some labels carry expiration dates, mark each container with its purchase date, use older products first, and buy only as much as you need for a single treatment season. A current on-site inventory keeps you from ending up with excess or unusable pesticide and, after an accident, fire, or theft, tells you exactly what was in storage. Physically, put containers on pallets or shelves to prevent water damage and corrosion, and follow the placement rule that trips people up: do not store dry materials on shelves below liquids, because a leak from above could drip down and contaminate them. Keep a dedicated, separate area for pesticides — or empty, triple-rinsed containers — that are awaiting disposal, so they don't get used by accident.

Temporary storage and returning products

Storage rules don't pause in the field. Pesticides and containers temporarily kept at a mixing, loading, or application site must be covered, secured, and/or guarded to prevent water contamination, theft, exposure of unprotected people, or other mishaps. And when you put products back, the container rule is firm: always store pesticides in their original containers, or — only if state law allows — in a properly labeled service container. Never move a pesticide into any other container. Using a food container like a milk jug, coffee can, or soft drink bottle isn't just illegal — it's genuinely dangerous, because people associate the shape, size, and color of a container with its usual contents, which is exactly how accidental poisonings happen.

How to study this chapter

1. Fix the transport hierarchy: separate/lockable compartment is safest, never the passenger compartment, and no passengers or animals in back.
2. Remember the PPE escalation — gloves for loading, but all label PPE once a container is opened — and that food/feed/PPE stay out of the pesticide compartment.
3. Know the spill kit contents and that you never leave a loaded vehicle unlocked.
4. For regulations, tie DOT → hazardous materials and the five possible requirements (training, emergency info, shipping papers, placard, CDL), plus that SDS Sections 14 & 15 tell you the transport status and the EPA reg number must match the label.
5. For siting, anchor not flood-prone and at least 100 feet from wellheads/waterways (states may differ), and that the area is locked.
6. Nail the two design traps: ventilation vents outside, not into another room, and metal shelving is preferred but some products react with metal (check the label).
7. Memorize the contents rules: only pesticides/equipment/cleanup, never with food/feed/seed/fertilizer/PPE, dry never below liquids, use older first, buy one season's worth, and keep a separate disposal area.
8. For returning products, lock in original or labeled service containers only and the food-container danger (illegal + people misread the container).