← CleanWise8.64.96.36.94.96.02.16.66.14.4 8.62.32.14.24.71.54.21.16.26.34.24.27.45.24.24.92.35.16.66.04.94.27.26.94.28.68.66.16.44.44.38.52.34.41.1 
Methylisothiazolinone
A potent preservative and known skin sensitizer.
Also known as: mi, mit, cmit/mit, methylchloroisothiazolinone
CAS #: 2682-20-4
Puppy Safety
4.0
Adult Dog Safety
5.0
Paw Safety
4.0
Respiratory Safety
6.0
Licking Risk
5.0
Environmental
5.0
Ingredient Transparency
—
Cleaning Performance
—
What this means for your dog
Plain-language read of the sub-scores above.
- Around puppiesExtra care recommended around puppies. Consider a gentler alternative or keep puppies away until surfaces are fully dry.
- Around pawsHigher potential for paw irritation. Rinse thoroughly and consider a paw wipe after contact.
- If lickedDo not let dogs lick treated surfaces. Rinse well and store securely; call your vet or poison line if ingested.
- In the airVentilate the room during and after use — open a window or run a fan.
Why brands use it
preservative
Found in these product types
Laundry Detergents
10 products contain Methylisothiazolinone
Fabric Softeners
9 products contain Methylisothiazolinone
Dish Soaps
3 products contain Methylisothiazolinone
Dog Shampoos
3 products contain Methylisothiazolinone
Air Fresheners
3 products contain Methylisothiazolinone
Floor Cleaners
3 products contain Methylisothiazolinone
Glass Cleaners
1 product contain Methylisothiazolinone
Bathroom Cleaners
1 product contain Methylisothiazolinone
Kitchen Cleaners
1 product contain Methylisothiazolinone
Dryer Sheets
1 product contain Methylisothiazolinone
Products containing Methylisothiazolinone
Nature Clean · Laundry Detergents
Nature Clean Laundry Concentrate - 1L – Lavender
Woolite · Laundry Detergents
Woolite Delicates Liquid
Better Life · Glass Cleaners
Better Life See Clearly Glass Cleaner
Fleecy · Fabric Softeners
Fresh Air Liquid Fabric Softener
Better Life · Dish Soaps
Better Life Dish Soap
Hartz · Dog Shampoos
Hartz Groomer's Best Oatmeal Shampoo
Fleecy · Fabric Softeners
Calm Liquid Fabric Softener (Vanilla & Honey Lotus)
Glade · Air Fresheners
Glade Aerosol Air Freshener
Nature Clean · Laundry Detergents
Nature Clean Laundry Liquid - 3L - White Lily & Moroccan Myrrh
Nature Clean · Dish Soaps
Nature Clean Automatic Dishwasher Gel - 1.8L
Fleecy · Fabric Softeners
Sensations Brazilian Paradise Liquid Fabric Softener
Fleecy · Fabric Softeners
Shed Shield Pet Hair & Odor Fabric Conditioner
Nature Clean · Laundry Detergents
Nature Clean Laundry Liquid - 3L - Fragrance Free
Method · Floor Cleaners
Method Squirt + Mop Almond Floor Cleaner
Fleecy · Fabric Softeners
Plus Fresh Air Liquid Fabric Softener
Mrs. Meyer's · Air Fresheners
Mrs. Meyer's Room Freshener Lavender
Purex · Laundry Detergents
Purex Free & Clear Liquid
Ajax · Dish Soaps
Ajax Ultra Triple Action Dish Liquid Orange
Mrs. Meyer's · Bathroom Cleaners
Mrs. Meyer's Tub & Tile Cleaner
Method · Floor Cleaners
Method Squirt + Mop Hard Floor Cleaner
Fleecy · Fabric Softeners
Odor Shield Liquid Fabric Softener
Fleecy · Fabric Softeners
Sensations Hawaiian Escape Liquid Fabric Softener
Nature Clean · Laundry Detergents
Nature Clean Laundry Liquid - 3L - Lavender
Nellie's · Dog Shampoos
One Soap — Plastic Bottle Formula
Fleecy · Fabric Softeners
Pure Balance Rosewater Liquid Fabric Softener
Nature Clean · Laundry Detergents
Nature Clean Laundry Concentrate - 1L – Lemon Verbena
Nature Clean · Laundry Detergents
Nature Clean Laundry Concentrate - 1L - Fragrance Free
Better Life · Kitchen Cleaners
Better Life What-Ever! All-Purpose Cleaner
John Paul Pet · Dog Shampoos
John Paul Pet Oatmeal Shampoo
Fleecy · Fabric Softeners
Sensations Lavender Liquid Fabric Softener
Better Life · Floor Cleaners
Better Life Naturally Dirt-Destroying Floor Cleaner
Nature Clean · Laundry Detergents
Nature Clean Laundry Liquid - 3L - Lemon Verbena
Seventh Generation · Laundry Detergents
Seventh Generation Free & Clear Laundry
Fleecy · Dryer Sheets
Sensations Lavender Dryer Sheets
Glade · Air Fresheners
Glade Aerosol Spray Clean Linen
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Sources
CleanWise provides educational information to help dog owners make informed household choices. Scores are based upon ingredient transparency, intended use and currently available information. Individual dogs may have different sensitivities. Always follow manufacturer instructions.