Webbing Clothes Moths

Extermination of Webbing Clothes Moths

webbing moth

Problems with Clothing Moths are controllable under professional care. Our treatment goal is to stop a problem at its source so it doesn’t keep coming back. Using state-of-the art equipment and methods, our licensed exterminators will inspect your home’s environment and construction to identify the problem and determine the best course of action.

General Facts

The caterpillars (larvae) of this moth are considered a serious pest, they spend their entire time eating and foraging for food. They derive nourishment from clothing such as wool, fur, feathers, and other natural fibers. They will not normally feed on cotton, silk or synthetic fibers but may attack fabric blends of wool or will feed on fibers soiled with perspiration, or dirt.

This moth prefers moist conditions as it doesn’t drink and gets its water from its food source. So it prefers damp and soiled fabrics, in fact it requires minerals from soiled garments for optimal growth and will avoid cleaned garments in very low humidity environments.

Appearance & Habits

A common type of clothes moth is the webbing moth. It is a small moth with a wing span of about 1/2 inch. It is uniformly pale golden in color with no unusual markings other than black eyes and a coppery tuft of hairs on the top of the head.

Webbing clothes moth is a weak flier and rarely leaves dark closets or other storage areas. Female moths lay their eggs within one to three weeks after they emerge. Eggs are glued to woolen threads so that they are not easily removed. After the larvae hatch they feed immediately and often they construct a silken tube and feed in the vicinity of this shelter.

Other times the larvae may continue to move across the fabric and only produce scattered patches of silk on which it rests. The larvae is a creamy white color and may reach 1/2 inch in length.


The best way to avoid problems with clothes moths is through prevention. Moths are much less attracted to clothes that have been dry cleaned prior to storage. Woolens and other susceptible fabrics should be dry cleaned or laundered before being stored for long periods. Cleaning kills any eggs or larvae that may be present and also removes perspiration odors that attract the pests.

Tight fitting containers are most useful to prevent or limit infestations of these pests. Moths can also be controlled by heating or freezing. And like most insects, moths are sensitive to extreme temperatures, for example, 110 degrees F to 120 degrees F are generally lethal to all insects if maintained for 30 minutes or more.

In addition, freezer temperatures of less than 0 degrees is also fatal, providing 72 hours have elapse and the temperatures was lowered quickly without giving the insects time to acclimate to the cold (slow cooling makes some insects immune to freezing) . Cool temperatures also slows development. It should also be noted that low relative humidity levels of 20% to 30% will also make the environment inhospitable to moths, since they are sensitive to drying conditions.

There are several common chemicals that will help with long term garment storage, they include paradiclorobenzene and naphthalene. These chemicals are sold in a crystalline form and have commonly been know as moth balls or crystals. Paradichlorobenzene turns into a heavier than air gas at about 50 degrees and kills all stages of moths at high concentrations. This high concentration may need to be maintained for 2 to 3 weeks.

However, please note that at high concentrations both of these chemicals are also very toxic to humans. Paradichlorobenzene may be a carcinogen and may also damage the liver and kidneys at high doses. And, naphthalene can damage the liver and cause eye injury. Mothballs can be especially dangerous if accidentally eaten. In summary, mothball should only be used sparingly. A safer approach to controlling moths is cleaning and use of a plant derived, lavandin oil dispensing hanger for clothes moth designed to hang between clothes in closets.

Bear in mind the following precautions, paradichlorobenzene will react with and melt or soften some hard plastics, such as polystyrene and Styrofoam (Polyethylene storage bags are not affected by PDB vapors.) A further precaution is not to use PDB for fumigating clothing that has plastic buttons or ornamentation.

Also, do not allow mothballs to come in direct contact with the clothing fabric; separate with paper or other barriers. Naphthalene is best used by scattering the balls or flakes in layers throughout the fabric or wool that is being treated. It does not react with plastic as does PDB.

However, please bear in mind that in moist conditions, naphthalene may produce a reddish-brown discoloration due to breakdown by bacteria. It may also corrode some metals and it should be placed within paper or applied in a similar fashion so that it does not directly contact the wool or fabric.