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Spiders in warehouses & manufacturing facilities

Spiders may be beneficial outdoors, but they pose real challenges in warehouse environments. Their webs often accumulate in hard-to-reach areas, like rafters, shelving, and corners, creating sanitation issues and potentially violating hygiene standards, especially in food-grade or pharmaceutical facilities.

Beyond cleanliness, spider activity can damage a company’s reputation. Clients and inspectors expect spotless, pest-free environments. A single sighting can raise concerns about broader pest control lapses and lead to failed audits or even lost business.

Spiders also signal a deeper issue: the presence of other insects. Since they feed on bugs, spotting them indoors often means there’s an underlying pest problem that needs to be addressed.

While most spiders are harmless, some species—like the brown recluse or black widow—can pose health risks. Even non-venomous spiders can cause discomfort among staff, impacting morale and productivity.

Why spiders thrive in warehouses & manufacturing plants

Spiders like warehouses and factories because they offer many places to hide. The large, dark spaces and quiet corners are perfect for spiders to build webs and nest. They are also attracted by other insects that they can feed on. If not managed, industrial spiders can multiply quickly. Warehouses with less foot traffic make it easy for them to stay hidden until their numbers grow.

Signs of spider infestation in your facility

It can be hard to spot spiders in manufacturing facilities or warehouses right away. However, there are clear signs of spiders in warehouses that can help you figure out if you have an infestation.

Here are some signs to watch for:

  • Spider webs: Look for webs in corners, behind equipment, and in dark areas.
  • Egg sacs: Finding spider eggs is a clear sign that spiders have settled in.
  • Spiders moving around: If you see spiders often, it’s a sign they’ve made a home in your facility.
  • Droppings: Spider droppings will appear under their webs, as round black and white spots.

If you notice these signs, it's time to act and call commercial pest control for help to manage the spider infestation.

Types of spiders found in warehouses & factories

Different types of spiders can be found in your warehouse or manufacturing facility. Some are more common than others.

Common house spider on white wall

Common house spiders

The common house spider, also known as Parasteatoda tepidariorum, is in the family Theridiidae. It is often found in warehouses. This small, brown or gray spider builds messy webs and prefers dark, quiet spots like corners and behind equipment. While not dangerous, it can become a nuisance in large numbers.

Cellar spiders

Cellar spiders

The cellar spider, often called “daddy long-legs,” has long, thin legs. It can be found in dusty corners and storage shelves. While not dangerous, these spiders make messy webs that can get in the way.

Wolf spider

Wolf spider

The wolf spider is larger than other spider types. It doesn’t make webs; instead, it hunts other insects. Wolf spiders are more aggressive and can be a problem in cluttered warehouses or storage areas.

Yellow sac spiders

Yellow sac spider

The yellow sac spider is pale yellow-green in color. It can be found where there is food or moisture. Although it can bite if disturbed, its bites are not usually harmful.

How to keep spiders out of your warehouse or facility

To prevent spiders in warehouses and manufacturing facilities, you need to take the following steps:

  1. Seal entry points: Check windows, doors, and cracks in walls. Close any gaps to stop spiders from getting inside.
     
  2. Clean regularly: Clean hidden areas like corners and behind equipment. This will remove spiders and their webs.
     
  3. Reduce clutter: Keep storage areas organized and free of unnecessary items. This makes your warehouse less inviting for spiders.
     
  4. Manage food sources: Since spiders eat insects, reducing the number of insects in your facility can help keep spiders away.
     
  5. Seek professional spider control: Our spider experts can help protect your warehouse with effective treatment and exclusion strategies. With our commercial pest control services, you can help effectively address the impact of spiders on your business operations.

Effective pest control and routine inspections are essential to help keep spiders and the pests they feed on out of warehouses and manufacturing spaces. Contact us today to book your pest inspection.

Frequently asked questions

Why are warehouses and factories prone to spider infestations?

Warehouses and factories have many quiet, dark spaces where spiders can hide. These areas also attract insects, which spiders feed on, making them ideal for spider infestations.

Can spiders cause product contamination or operational downtime?

Yes, spiders can attract insects that might contaminate products. Their webs can also get in the way of equipment, causing machinery to get stuck or damaged. They can also be a safety risk if not removed. This can cause downtime and delays in your operations.

Spider control for Commercial premises