1. Bugs eat clothes all year long?

Insects eat clothing during their larval season. Among these pests are Katsuo Shimushi and Himemaru Katsuo Shimushi, which lay eggs once a year, and spend approximately nine months as larvae.

In addition, Iga and Koiga, fellow members of the silkworm family, lay eggs three times a year, and about two thirds of their lives are spent in the larval stage. However, the length changes depending on the time of birth, and it could be two to five months.

Insects become active in the warm season, when the temperature is 15 degrees (Celsius) or more. However, the activity slows down when the temperature is over 35 degrees, and they die when it gets close to 40 degrees. They also die in the cold winter months. However, if the temperature of the room is kept constant via air conditioning or heating, it creates a comfortable environment for insects all year round, during which time they will continue to lay eggs.

In-home insect repellents 2

2. What is the best timing to avoid bugs?

Many people in Japan rotate their clothing in spring and fall. It is best, if possible, to select a time where it is unlikely that larvae are present, though in reality this is quite difficult. Therefore, it is important to create an environment that keeps insects away at all times. Since food spills, sweat, and oil stains on clothes become food for insects, it is essential that you wash and dry your clothes thoroughly before putting them away or storing them for the season.

In addition, since clothing pests may be attached to clothes that have been dried outdoors, carefully brush them before hanging or folding them to remove insects and eggs on the surface of the fabric. In addition, putting insect repellent in your drawers and closets will further reduce the possibility of damage from insects.

There are various types of insect repellents depending on the size of the storage space, so use the one that suits your home.

3. What is 防虫剤 like in Japan?

There are basically three types: Small ones that go in drawers, hanging ones to put in your closet, and protective sheets to cover jackets and other expensive items. Most of these products also have deodorizing and mold-preventing properties.

Some are unscented while others also act like drawer sachets and leave a refreshing scent inside your drawer. These can be useful if you have wooden drawers that leave your clothes smelling of wood.

When using the drawer type, 1 packet per small drawer is adequate. If you have large drawers, 2~4 packets are recommended.

Scented

Scented insect repellent

For closet

Closet insect repellent

Jacket cover type

Jacket cover type insect repellent

When it is time to change them, the packet will indicate as follows:

Replacement indicator 6 Replacement indicator 7
Replacement indicator 8 Replacement indicator 9

For a more detailed look at how to use these repellents, watch this short video below:

In-home insect repellents in Japan

Here are some general handling precautions for all such products:

【Preservation method】

Seal and store in a cool place out of direct sunlight.

4. Where can you buy?

These products are available at any drug store or home center. They may also be available at some grocery stores.

Here is some useful vocabulary to help you navigate repellents.

Japanese Romaji English
1年間(いちねんかん)ichinenkanOne year
有効 (ゆうこう)yuukouvalid/active
防虫剤(ぼうちゅうざい)bouchuuzaiInsect repellent
衣類(いるい)iruiclothing
引き出し(ひきだし)hikidashidrawer(s)
カビ(かび)kabimold
防カビ(ぼうかび)boukabiMold preventative
虫(むし)mushibugs/insects
ニオイがつかないNioi ga tsukanaiDoes not leave a smell behind
おわりowariEnd/over
無臭(むしゅう)mushuuunscented
消臭(しょうしゅう)shoushuudeodorizer
香り(かおり)kaoriscent
柔軟剤(じゅうなんざい)juunanzaiFabric softener
黄ばみ(きばみ)kibamiyellowing
防止(ぼうし)boushiprevention/preventative