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Raku Hapi Ofuro Kabi-nu Mold Prevention Fumigator for Bathrooms Fragrance Free

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It penetrates deep into the bathroom and sterilizes it, and does not grow black mold for up to 2.5 months!


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Product Details & Features

Product Details

Product Name Raku Hapi Ofuro Kabi-nu Mold Prevention Fumigator for Bathrooms Fragrance Free
Amount 1 piece
Country of Origin Japan
component Isopropyl methylphenol (IPMP), smoke maker, deodorant ingredient
Duration of effect 最長2.5ヵ月※季節・使用環境(浴室の広さ等)により異なります。
Others 【Product name】 Antifungal agent for bathroom

See the instructions enclosed with the product(PDF: 1,102KB)


黒カビ生やさない! じっくりと徹底的に防カビ

Deodorizes unpleasant odors in the bath!

You can leave small items in the bathroom!

After preventing mold, wash away anything that gets in your mouth with water before using.

防カビ効果 最長2.5ヵ月*









What is the disinfectant component IPMP? ]

IPMP (isopropylmethylphenol) is an ingredient used in familiar products such as dentifrices and cosmetics.


How to Use

This product is not a mold remover. It is a product that makes it difficult to grow black mold.
Be sure to read the attached instruction manual before using.

<For the first time>


< Second and subsequent times >

Use once every 2.5 months to increase the antifungal effect, and normal cleaning will keep you clean. (The effect varies depending on the usage environment such as temperature and humidity in the bathroom.)

【Advance preparation】

Turn off the ventilation fan and close any windows.

  • 小物類(洗面器、タオル、シャンプーボトル等)も浴室内に置いたままで大丈夫。
  • Even if the bathroom is dry or wet, there is no difference in the antifungal effect.
  • It can also be used with a unit bath or bathroom dryer.


○ Those that can be used while left in the bathroom

Material Product example
FRP, aluminum, glass, wood, concrete
Stainless steel, marble, ceramics (tiles)
Bathtubs, chairs, tubs, mirrors, walls, accessories, faucets, showers
Drainboards, railings, drain traps, floors
Others Bathroom dryer, stationary bathroom TV
(Contains multiple materials)

○ Be careful (cover or take out of the bathroom)

Material Product example
Brass, tin, copper Metal fittings, basin,
Drain trap, bucket
Others Portable home appliances
(Waterproof TV, radio, etc.)

・ Be sure to take creatures and plants out of the bathroom.

【how to use】

  • Take out the aluminum bag inside the plastic container and fill it with water up to the dotted line of the plastic container. Use one at a time for each bathroom, regardless of the size of the bathroom.

    ・ Be careful not to insert too much more than the dotted line.

  • Open the aluminum bag and take out the can.

    ・ Do not remove the red sticker on the top of the can.

  • 水を入れたプラスチック容器を浴室の中央に置き、缶の赤いシール面を上にして薬剤缶を入れ、リング状のフタをしてください。

    ・ Do not touch the can as it will become hot after setting. The can cools in about 60 minutes.

  • 約30秒後に煙が出るので浴室から出て30分以上ドアを閉めきってください。(最初の約1分は勢いよく煙が出て、その後約10分で止まります。)

    -In rare cases, the ring-shaped lid or part of the container may melt slightly due to heat, but it does not affect the quality such as safety and effectiveness.

    ・ When the drug evaporates, a solid substance that looks like it is dissolved in black remains inside the can as the residue of the drug.

● A small amount of smoke may leak into the dressing room or surrounding rooms, but this is not a problem. If you are concerned, please ventilate.

[After use]

  • 30分経過後、換気扇を動かして必ず30分以上換気してください。
  • Do not touch the can until ventilation is complete, as the can may be hot. Also, do not splash water on the used can.
  • There is no need to flush the bathroom with water after using this product.
  • If there is no smoke in the bathroom, you can bathe.
  • 日常の浴室掃除は通常どおり行ってください。
  • Dispose of used cans according to the classification of the local government, such as "metal waste" and "non-burnable waste".

[Bathroom type and processing time]

  • Ventilation fan switch is outside the bathroom
    → After 30 minutes or more after smoking, ventilate for 30 minutes or more.
  • Ventilation fan switch is not outside the bathroom
    There is no ventilation fan in the bathroom (windows only)
    → After 60 minutes or more after smoking, ventilate for 30 minutes or more.

    (Be careful not to inhale smoke.)

  • [About the second and subsequent use]

    2.5 months later, or when new mold begins to appear, is a guideline for next use.


    Please use it to prevent black mold in the entire bathroom.
    It can also be used in stainless steel, FRP, wood and marble bathtubs.

    [Estimated usage]

    Please use one at a time for each bathroom.

Instruction Video(Japanese Only)

Usage Notes

  • Use only for the intended purpose.
  • 煙を吸い込まないように注意する。
  • 使用中の缶は熱くなり、やけどの原因となるので直接触れない。

[Precautions regarding storage and disposal]

  • 直射日光・水のかかる所、湿気の多い所を避け、子供の手の届かない涼しい所に保管する。
  • 使用済みの缶は各自治体の定める方法に従って廃棄する。

【First aid】

  • In the unlikely event that you feel something wrong with your body, bring the product and consult a doctor.

Frequently Asked Questions

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