How Seasonal Decorations Can Accidentally Bring Pests Into Your Home

You pull the holiday boxes down from the garage shelf, crack the lid, and a few small spiders scurry away from the light. In Reno, that moment is more than a nuisance. Our high-desert climate and cold winters create perfect conditions for pests to move into the same places we store and display our seasonal decorations.

It feels counterintuitive. The temperature drops, we see fewer bugs outside, and it seems like pest season is over. In reality, fall and early winter are when mice, rats, spiders, and overwintering insects are most eager to share your warm home. The very act of bringing in a tree, a wreath, or a box of decorations can give them a free ride inside.

At Truckee Meadows Pest Control, we have a team of state-certified, Purdue University-certified, and Quality Pro-certified technicians who work with these patterns every day. With over 50 years of combined experience, and a 100% satisfaction guarantee, we focus on helping Reno homeowners understand how seasonal decorations can accidentally bring pests into the home, and what simple steps keep the holidays enjoyable and pest free.

Why Reno’s Cold Season Makes This Problem Worse

Reno’s fall temperature drop is the starting gun for rodents and many insects. As nights get colder, mice and rats actively search for warmth and shelter indoors. That timing lines up almost perfectly with when we start pulling boxes out of attics, garages, and crawl spaces, which means decoration season and peak rodent pressure season overlap.

Those same attics, garages, and storage areas sit at 4,500 feet in a high-desert climate. They are dry, often undisturbed for months, and offer tight gaps, cardboard, insulation, and stored items for cover. For pests, that combination is ideal. Roof rats, black widows, silverfish, and other overwintering pests settle into these spaces long before we climb up to grab the “holiday” box.

Once decorations come inside, indoor warmth changes the biology of the pests we accidentally carry with them. Many insects survive winter as eggs or in a slowed, dormant state. When a live tree, wreath, or box of decor moves from a cold garage into a heated living room, that temperature jump can wake them up. Aphid egg dormancy, spider egg sacs, and other overwintering stages can break rapidly in warm, dry interiors, which is why homeowners often notice bugs a few days after decorating instead of right away.

Natural & Live Decorations: What Comes In From Outside

Anything natural that starts outdoors and ends up in your living room can double as a vehicle for pests. We do not want you to give up live greenery altogether, but we do want you to treat it as a possible pest vector and handle it accordingly.

Live Trees, Wreaths, and Garlands

Live Christmas trees, fresh wreaths, and garlands can carry tiny hitchhikers in their branches and bark. Aphids, spider mites, adelgids, small spiders, and their egg sacs all find shelter in dense greenery. On the tree lot, cold temperatures keep them quiet. Once the tree is inside your warm home, they can become active.

A simple inspection routine helps. Before bringing a tree or large greenery indoors, we recommend:

• Shaking it out outside to dislodge loose insects and egg sacs.
• Checking branch crotches and trunk crevices with a flashlight for webbing or clusters of eggs.
• Inspecting the cut end and bark for sawdust, frass, or obvious boring holes that might indicate wood-boring insects.

Potted Holiday Plants

Poinsettias, paperwhites, and other holiday plants brighten a room, but their soil can host soil-dwelling pests. Fungus gnats and whiteflies thrive in moist potting mix, and once inside your heated home, they may start breeding quickly around windows and lights.

When you purchase holiday plants, look closely at the soil and undersides of leaves. If you see tiny flies when the pot is disturbed, sticky residue on leaves, or yellowing specks, that plant may already harbor an issue. Quarantining new plants away from your main living areas for a few days and letting the top layer of soil dry slightly can reduce gnat pressure.

Fall & Halloween Decorations

Reno’s pest season does not start with Christmas. Fall and Halloween decor often give pests their first chance to move closer to the home. Dried corn, gourds, hay bales, straw, and natural fiber items like burlap are all organic materials that attract insects and rodents.

Pantry beetles, Indian meal moths, and other stored-product pests can feed on dried plant material. Rodents may investigate displays that include corn, seeds, or stacked straw, especially if these are close to walls or foundation lines. When these items are moved to porches or near doors, they increase high-desert climate pest pressure right where pests are already looking for a way indoors.

Stored Decorations: What Comes In From the Attic and Garage

Even if every decoration started clean, a year in storage in Reno’s attics and garages gives pests plenty of time to move in. The storage location itself becomes part of the problem.

Cardboard Boxes and Paper Storage

Cardboard does more than just hold decorations. It absorbs moisture, provides hiding layers, and even serves as food for some pests. Silverfish, cockroaches, and rodents can all take advantage of a cardboard box infestation over the course of a long winter.

Before carrying any box inside, it is worth a quick pest inspection in the garage or on the driveway. Look for gnaw marks on corners, small droppings, chew holes, shed insect skins, and webbing around the handles or flaps. Any musty or “rodent” odor is a sign you should open the box outside and check everything carefully.

Fabric Items and Soft Decor

Tree skirts, stockings, table runners, and plush ornaments often sit in unsealed bags or loosely closed boxes. Clothes moths target natural fibers like wool, felt, and some cotton blends. Their larvae can feed unnoticed for months, leaving behind thinning spots, irregular holes, or silken webbing.

We recommend storing fabric decorations in sealed plastic containers or vacuum bags and giving them a quick inspection and wash before use. If you notice fresh damage or larvae cases, that is a signal that pests have been active in your storage area, not just on a single item.

Black Widows in Storage Areas

In the Reno area, black widow spiders are a documented concern, particularly in garages, woodpiles, sheds, and undisturbed corners. These are the same places many of us stack artificial wreaths, garlands, and light strings.

When you retrieve decor, assume that any piece that has hung in a garage or shed could provide black widow spider harborage. Shake artificial wreaths and garlands outside, tap plastic totes before opening them, and use gloves if you are reaching into dark shelves. A few seconds of caution can prevent a painful bite.

Firewood & Outdoor Lights: Two Overlooked Entry Points

Not all holiday-related pests arrive through decor boxes. Some slip in with the things we bring closer to the house as the weather turns cold.

Firewood Stacks Near the Home

A neat stack of firewood just outside the back door is convenient on a cold night. It is also attractive to carpenter ants, termites, spiders, and other overwintering pests that like tight, sheltered gaps. When firewood touches the foundation, it can become a bridge for pests directly into the structure.

Industry guidance, including from organizations like the National Pest Management Association, recommends storing firewood at least 20 feet from the home, off the ground on a rack or pallet. Bring in only what you will burn in a short period, and knock or brush off logs before carrying them inside.

Outdoor Lights, Cords, and Decorations

Outdoor string lights and extension cords attract more than holiday attention. When they are turned on, they emit a small amount of heat that can draw insects on cold nights. If they remain in place or are stored in cluttered garages, rodents may chew through their insulation to gather nesting material, which creates both pest issues and potential fire hazards.

When you take down outdoor lights, check cords for chew marks and store them in sealed containers rather than in loose coils on the floor. Keeping storage off the ground is a simple pest exclusion step that reduces rodent and insect contact with your decorations.

A Practical Pre-Display Inspection Routine

Reno homeowners do not need to become entomologists to reduce seasonal decoration pests at home. A consistent, simple routine before you decorate can make a meaningful difference.

• Stage boxes outside or in the garage: Unpack decorations in an area that you can sweep or vacuum easily, not in the middle of your living room. This way, any insects or droppings you uncover stay out of your main spaces.
• Inspect each box: Look for rodent droppings, chew marks, frayed wires, live insects, shed skins, webbing, and unusual odors. If you find signs, isolate that box and its contents for a closer look before bringing anything inside.
• Upgrade storage containers: Replace cardboard boxes with sealed hard plastic bins with tight, snap-fit lids. Store them on shelves, pallets, or racks instead of directly on the floor, which reduces moisture contact and makes rodent access more difficult.
• Clean and wash fabrics: Run washable fabrics like tree skirts, stockings, and linens through a hot wash and dry cycle before use. This helps clear dust and may destroy any hidden insect stages.
• Retire natural greenery after the season: Instead of re-storing dried wreaths, garlands, and centerpieces made from natural materials, discard them at season’s end. Old organic materials are magnets for insects in storage.
• Inspect potted plants at purchase: Check leaves, stems, and soil for pests before bringing holiday plants home. If you are unsure, ask the garden center about any integrated pest management (IPM) steps they have taken, and keep new plants slightly apart until you are confident they are clear.

When Prevention Is Not Enough

Even with good habits, seasonal decorations can still introduce pests into your Reno home. The key is recognizing when a small issue is turning into an active infestation that needs professional attention.

Warning signs include insects emerging from the tree several days after setup, small piles of droppings appearing near where you stored boxes, sudden spider or ant activity clustered around decor areas, and recurring pests like silverfish or moths in rooms that only see seasonal use. In a high-desert climate, these patterns often point back to overwintering pests that found their way in through decorations, firewood, or storage spaces.

When that happens, identifying the exact source and spread quickly matters more than treating just the visible insects. Our technicians at Truckee Meadows Pest Control bring state, Purdue University, and Quality Pro certifications, along with more than five decades of combined experience, to each inspection. We look at how pests entered, what attracted them, and what structural or storage changes will provide lasting pest exclusion, not just a temporary fix.

Because we stand behind our work with a 100% satisfaction guarantee, any concerns you have after a service visit are addressed until resolved. That reliability can make a real difference if you discover an issue in the middle of the holidays when schedules are already full and stress is higher.

Reno’s combination of cold winters, high elevation, and dry air makes proactive habits around seasonal decorations more important than in milder climates. A few small changes to how you bring in greenery, store decor, and manage firewood can reduce the hidden pest risk that comes with the season. If you are seeing signs of pests around your decorations, or you would like a professional inspection before you set everything up this year, we are here to help at Truckee Meadows Pest Control. You can reach our team at (775) 535-5788 to schedule a visit that fits your timing.