Storing textiles: moths, light and damp are the three threats

What follows is the working version of storing textiles: the decisions in the order you actually meet them, with the reasoning attached.

What actually eats your clothes

It is the larvae of clothes moths and carpet beetles, not the adults, that feed on animal fibres such as wool, cashmere, silk and feathers. They avoid light and disturbance, which is why the damage appears under collars, in folds, in the back of wardrobes and under furniture.

Body oils, sweat and food residues make a garment far more attractive to them, which is why unwashed items are the most likely to be eaten. Cotton and synthetics are largely safe on their own and can still be damaged where they are soiled.

Prevention that works

Everything should be clean before storage, because washing removes both existing eggs and the residues that attract new ones. Freezing an item for several days, or a hot wash where the fabric permits, kills eggs and larvae, and cold storage alone only pauses them.

In practice, regular disturbance, vacuuming into corners and under furniture, and moving stored items around all break the cycle. Cedar and lavender are widely recommended and their effect is limited; they may deter adults somewhat and they do not kill larvae.

Choosing the right container

Sealed containers work well provided the contents are genuinely dry and clean, since a sealed box with damp wool becomes a mildew problem instead. Breathable cotton bags suit natural fibres in a dry environment and offer less protection against insects. Vacuum bags save enormous space and crush fibres, which is acceptable for a season and damaging for years.

Whatever the container, storing in a dry, ventilated place matters more than the container itself.

Light and hanging

Sunlight fades dyes and weakens fibres, particularly silk, and it does so unevenly, which is why the shoulders of hung garments fade first. Knitwear should be folded rather than hung, because the weight of the garment stretches the shoulders permanently. Wire hangers distort shoulders and mark fabric; wide wooden or padded hangers distribute the load.

Garment bags protect from dust and light and should be breathable rather than sealed plastic for long-term storage.

Damp and where things go wrong

Lofts, cellars, garages and the backs of external-wall wardrobes are the places textiles most often develop mildew. Mildew stains are frequently permanent and the smell is difficult to remove entirely. A cheap humidity meter in a storage area turns a suspicion into a fact and costs very little.

Live with it a while and anything stored against a cold external wall should have an air gap behind it.

Budgets and buildings differ, and old buildings differ most.

If you already have an infestation

Identify the source by looking for larvae, cases and shed skins rather than assuming it is the visible adults. Everything in the affected area needs cleaning, freezing or hot washing, and the space itself needs thorough vacuuming into every crevice. Pheromone traps monitor activity and indicate whether the problem is continuing; they do not solve an infestation on their own.

For a severe or recurring case, a professional pest controller is worth the cost, and any treatment product must be used strictly according to its instructions.

The takeaway

Wash everything before it goes away, keep it dry and disturbed, and do not trust a sachet of lavender to do the work.

A room that is used will always beat a room that is finished.