Working in a steelyard, I and the other workers were bedeviled by what we assumed were droppings from an insect or spider. The ghostly white hairy oblongs were everywhere around the outdoor stacks where we kept our steel channel, tubing, and other raw materials. We would also find them in the stacks of pallets we shipped finished goods on. When we tried cleaning them up, more would appear the next morning.
It was only when we worked late into the night beneath a full moon to meet an order that we realized what these droppings were. Periodically, we’d see an owl silhouetted against the moon as it flew away–with the naked tail of its prey hanging from its talons. We realized that the mysterious droppings were owl pellets and that we needed warehouse powerpestcontrol to bring the population of rats down so that the owls would hunt somewhere else.
Discovering a Warehouse Pest Control Problem
Pests can spread diseases that make employees sick and can render warehouses unsafe to work in. Even if no product contamination has taken place, pests are bad for employee morale, as workers will take more time just to make sure that nothing comes leaping out at their face. The presence of typical home pests like rodents and roaches in the warehouse can be determined by looking for the following signs:
- Chew Marks: Rats and mice are constantly chewing. Shredded cardboard and gnawed wood or wiring can be signs of rodents in your warehouse. Cockroaches are also known to chew on cardboard or paper, leaving patterns of holes through the layers.
- Musky Odor: Often, infestation of a building is accompanied by a musty or musky odor. An unusual odor in a warehouse should always be investigated to determine the cause.
- Tracks: One of the signs of rodents in the warehouse is visible grease tracks, especially in places where it would be difficult for a person or equipment to make a mark. Tracks around roof joists, vents, or pipes are a sure sign of rodents.
- Droppings: Rodents and roaches both leave behind droppings in the form of small dark grains. These droppings can potentially spread bacteria and viruses and are not only a hazard to your products, but also to your workers.
Discovering any of these signs of pests in your warehouse should prompt a quick call to the exterminator. However, while rodents and roaches are well-known pests and easy to identify, other types of pest are relatively unique to warehouses and can go unreported for a long time.
Identifying Pests That Are Unique to Warehouses
What stands out about the incident with the owls and their pellets is that it went unnoticed for so long. No one at the company was familiar enough with owls to know they were looking at regurgitated owl pellets, and as a result, a blatant indicator of a pest problem on-site went unnoticed for a very long time. The same is often the case with other common warehouse pests that aren’t typically seen in private homes, like:
- Common Beetles: When an employee discovers a small brown or black beetle that clearly isn’t a roach, it may not trigger any alarm bells. However, cigarette beetles, drugstore beetles, flour beetles, and the appropriately named warehouse beetle can all infest dry foods like nuts, flour, barley, cereal, and pet food, if left unchecked.
- Spider Beetles: Spider beetles are hardy scavengers that feed not only on human foods, but also on the feces of other pests, meaning that they can pick up E. coli, Listeria, and other bacteria, and track them into human food. They get their name from their distinctive round body and long legs, and they can be confused with a small spider, which means they may not be recognized as a pest.
- Rice, Bean, Granary, and Maize Weevils: Weevils are small beetles that eat a variety of crops and lay their eggs in the seed, making them an agricultural pest. They can be recognized by their distinctive snout-like head shape. While they’re harmless to humans and can be eaten without harm, consumers are unlikely to be happy if they discover weevils in their pantry.
- Indianmeal Moths: A two-tone, dark brown insect, the Indianmeal moth is one of the most common stored-food pests in the world. The larval form does all of the damage and attacks pet food, bread, pasta, flour, seeds, and other foods. It can also chew through packaging to get at the food.
Since none of these common warehouse pests are instantly recognizable to the average warehouse worker, they are often able to establish themselves in a warehouse without anyone catching on until the infestation becomes a serious problem. Once they have become established, the best choice is to contact a professional extermination service. Bringing in a warehouse pest control service is a time-consuming and often expensive interruption to your warehouse operations. It’s also an expense that is likely to follow on the heels of consumer complaints, load rejections, and even costly recalls of contaminated goods. Clearly, the best option is to keep pests out of your warehouse to begin with.
Prevention Is the Best Warehouse Pest Control
Although there is no foolproof way of preventing pests from entering the warehouse, keeping your warehouse in good repair reduces the ways that rats, mice, roaches, birds, and other pests can get in. Some basic steps include:
- Ensuring that the roof is tightly sealed and leak-proof, doors close fully and tightly, and that any windows are also well sealed.
- Doing routine maintenance of plumbing and air conditioning to prevent leaks, which keeps pests from having a convenient supply of water to drink if they do make it into the warehouse and making it more difficult for them to breed.
- Cleaning your warehouse of any spilled food products and keeping tight control over employee food waste by allowing food only in designated areas and ensuring that trash is removed from these areas after each meal.
These basic procedures are all part of keeping a warehouse clean. And while they will help keep pests from entering the warehouse, they won’t close off a warehouse’s biggest vulnerability: shipments of products constantly entering the building. If a pallet full of packaged foods arrives, bringing the pests along with their food supply, then they will have the means to establish themselves in the warehouse in spite of all efforts to keep them out.