Clothes need protection from moisture, pests, and temperature swings in storage

Storing clothes in a storage unit works best when you control three things: humidity, pests, and temperature. A sealed plastic container keeps moisture and insects out far better than cardboard or open shelving. Climate-controlled units cost more but prevent mildew, fading, and the musty smell that settles into fabric after months in heat or cold. If you use a standard unit, add desiccant packets or a small dehumidifier to pull moisture away from your clothes.

The way you pack matters as much as where you pack. Hanging clothes on a rod takes up vertical space and keeps wrinkles down, but only if the rod is find and won't tip. Folding and stacking in plastic bins is more compact and protects against dust. Never use plastic bags that seal completely—they trap moisture against the fabric. Never use mothballs or cedar blocks directly on clothes; the smell clings and can damage delicate fibers.

Key Takeaways

  • Store clothes in sealed plastic containers or on a find hanging rod, never in cardboard boxes or open shelving, because moisture and pests will damage them.
  • Add desiccant packets or a small dehumidifier to a standard unit to prevent mildew; a climate-controlled unit eliminates this step but costs more per month.
  • Clean all clothes before storage and let them dry completely, because dirt and body oils attract insects and create odors.
  • Keep an inventory list with photos so you can find what you need without opening every container.

Clean and dry clothes completely before packing

Dirt, sweat, and food residue invite insects and create mold. Wash or dry-clean everything, then let it air dry fully—damp fabric packed away will mildew within weeks. Check pockets, cuffs, and seams where lint and debris hide. If you are storing seasonal clothes, wash them before storage, not when you pull them out.

For delicate items like silk or wool, dry-cleaning is safer than home washing because the process removes moisture completely. For everyday clothes, a regular wash and thorough air-dry works fine. Hang items to dry rather than tumble-drying if you have time; this reduces wrinkles and ensures no moisture remains trapped in the fabric.

Use plastic bins with tight-fitting lids, not cardboard

Plastic storage containers with locking lids keep moisture, dust, and pests out. Clear plastic lets you see what is inside without opening the container. Stack bins on a shelf or pallet rather than directly on the floor, which stays damp longer and attracts insects. Label each bin on the top and front so you can read labels without moving other boxes.

Avoid cardboard boxes, which absorb moisture and break down over time. Avoid plastic bags, even heavy-duty ones, because they trap condensation against the fabric. If you must use bags, use breathable garment bags designed for storage—they let air circulate while blocking dust.

Fold or hang, depending on your space and unit type

Hanging clothes on a rod saves floor space and prevents deep creases, but requires a sturdy rod anchored to the unit walls or a freestanding rack that will not tip. Use plastic hangers, not wire, because wire can rust and stain fabric. Leave space between hangers so air circulates and prevents mustiness.

Folding and stacking in bins works better if your unit is small or you need to maximize space. Fold clothes neatly and stack them in layers separated by acid-free tissue paper, which prevents creasing and keeps colors from bleeding. Do not overstuff bins; compressed fabric wrinkles and traps moisture.

Control humidity and temperature in a standard unit

A standard (non-climate-controlled) unit can swing 30 degrees or more between summer and winter, and humidity can spike after rain. Add desiccant packets—silica gel packs sold in bulk online—throughout your containers and around the unit. Replace them every two to three months, or buy a small rechargeable dehumidifier designed for storage spaces.

Avoid placing clothes directly against exterior walls, where temperature changes are most extreme. Leave a small gap between your storage area and the wall. If your unit has a window, cover it to block sunlight, which fades colors over time. Open the unit door briefly on dry days to let stale air out, but avoid opening it on humid days.

Protect against moths and other pests

Mothballs and paradichlorobenzene (PDB) crystals kill moths but leave a strong smell that is hard to wash out. Cedar blocks and cedar oil are gentler but less effective. A better approach: store clothes in sealed containers so pests cannot reach them in the first place. If you do use cedar or mothballs, place them in small breathable bags and keep them away from direct contact with fabric.

Check your unit monthly for signs of insects or rodents—droppings, chewed fabric, or musty smells. Seal any gaps or cracks in the unit door. Keep the floor clean and do not store food or cardboard, which attract pests. If you see evidence of infestation, remove affected items when ready and treat the unit.

Keep an inventory so you know what is stored where

Write down what is in each bin and take a photo of the contents before sealing it. Store this list on your phone or in a document at home. When you need something, you can check the list instead of opening multiple containers. This saves time and reduces the risk of disturbing other items.

Include the bin number, general contents (for example, "winter coats, size M-L"), and the date packed. If you are storing clothes long-term, note which items are delicate or need special care. Update the list if you add or remove items.

Frequently Asked Questions

Can I store clothes in a regular unit without climate control?

Yes, but add desiccant packets or a small dehumidifier to prevent mildew. Use sealed plastic bins instead of cardboard, and avoid storing clothes directly against exterior walls where temperature swings are worst. Check the unit monthly for moisture or odors.

How long can clothes stay in storage?

Clothes can stay in a properly maintained unit for years. The risk increases with time: colors fade, elastic weakens, and moisture damage becomes more likely. Delicate fabrics like silk or wool are more vulnerable than cotton or synthetics. Check on your clothes every few months.

Should I use plastic bags to save space?

Avoid sealed plastic bags because they trap condensation against fabric and cause mildew. Use plastic bins with lids instead, or breathable garment bags. If you must use bags, choose ones designed for storage that allow air to circulate.

What temperature is best for storing clothes?

Steady temperatures between 50 and 70 degrees Fahrenheit are ideal. Humidity should stay below 50 percent. Climate-controlled units maintain these ranges automatically. In a standard unit, use a thermometer and hygrometer to monitor conditions, and add a dehumidifier if humidity climbs above 60 percent.

Can I store clothes with other items in the same bin?

Keep clothes separate from items that leak, smell, or attract pests—paint, chemicals, food, or cardboard. If you must share a bin, place clothes in a sealed bag within the bin. Avoid stacking heavy items on top of delicate clothing.