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Really smelly pet blankets usually need more than one quick wash. Start by removing hair and loose dirt, pre-treat the odor source, then wash with a pet-safe laundry detergent using the warmest water allowed by the care label. Dry the blanket fully before putting it back on the bed.
Do not cover strong odors with heavy fragrance. The smell often returns because body oils, saliva, urine, mud, or dampness are still trapped in the fabric.
Start by Finding the Source of the Smell
Different smells need slightly different treatment.
Common causes include:
- Wet dog odor
- Body oils and saliva
- Urine or other accidents
- Dampness from slow drying
- Mud and outdoor dirt
- Food spills
- A blanket left in a crate, car, or laundry basket for too long
Check the whole blanket before washing. Look closely at corners, folds, and the area where your pet usually sleeps. A hidden damp spot may be causing most of the odor.
If the blanket has been soiled with urine, vomit, or feces, remove the mess before placing it in the washer. Follow the product label for any stain or odor treatment you use.
Check the Care Label First
Pet blankets can be made from fleece, cotton, wool, sherpa, microfiber, or mixed fabrics. They do not all handle heat or strong washing cycles the same way.
The care label should tell you:
- Whether the blanket is machine washable
- The safest water temperature
- Whether bleach is allowed
- Whether it can go in the dryer
- Which heat setting to use
- Whether it needs air drying
Heat can shrink some fabrics, damage waterproof backing, or set certain stains. When the label is missing, use cool or warm water and a gentle drying method rather than guessing.
How to Deodorize Really Smelly Pet Blankets
1. Remove as Much Pet Hair as Possible
Loose pet hair can collect inside the washer and stick back onto the blanket.
Shake the blanket outdoors if possible. Then use one of these methods:
- A lint roller
- A rubber pet-hair brush
- A vacuum upholstery attachment
- A slightly damp rubber glove
- A short no-heat dryer cycle, if the care label allows it
Clean the dryer lint filter afterward. Very hairy blankets may need more than one pass.
2. Rinse or Blot Fresh Messes
For a fresh accident, blot up moisture with an old towel. Avoid rubbing hard, which can push the mess deeper into thick fabric.
Rinse the affected area with cool water when the care label allows it. Hot water may make some stains and odors harder to remove.
For solid messes, lift away as much as possible before rinsing. Do not place a heavily soiled blanket directly into the washer without cleaning the surface first.
3. Pre-Treat the Smelly Areas
Apply a laundry pre-treatment or pet-odor product that is suitable for the blanket’s fabric. Enzyme-based laundry products are often used for protein-based messes such as urine, saliva, and food.
An enzyme product works by helping break down the material that causes the odor. It needs enough contact time to work, so follow the label instead of rinsing it off right away.
Test any treatment on a hidden part of the blanket first, especially on dark colors, prints, wool, or delicate fabrics.
4. Wash the Blanket by Itself
A very smelly pet blanket should usually be washed alone or with other pet bedding. Washing it with clothing, towels, or sheets can move hair and odor onto the rest of the load.
Do not pack the washer tightly. The blanket needs room to move so water and detergent can pass through the fabric.
Large, thick blankets may be too bulky for a home washer. Check your washer guidance. An overloaded machine may not rinse the blanket well and can leave detergent and odor trapped inside.
5. Use the Right Amount of Detergent
More detergent does not always mean a cleaner blanket. Too much can leave a coating that holds body oils, dirt, and fragrance.
Use the amount listed on the detergent label for the load size and soil level. A fragrance-free detergent may be a better choice when you want to know whether the odor is truly gone rather than covered up.
Avoid fabric softener unless the blanket’s manufacturer recommends it. Softener can leave residue on fleece, microfiber, absorbent fabric, and some waterproof materials.
6. Choose the Warmest Safe Water
Warm water can help loosen oils and grime, but the care label comes first.
Use:
- Cool water for delicate, dark, or shrink-prone blankets
- Warm water for many washable cotton, fleece, and synthetic blankets
- Hot water only when the care label clearly allows it
Do not assume every pet blanket can handle a sanitation cycle. High heat can damage elastic, waterproof layers, foam inserts, or glued parts.
7. Add an Extra Rinse
An extra rinse can help remove detergent, loosened dirt, and odor treatment residue. This is useful for thick fleece or plush blankets that hold a lot of water.
After washing, smell the blanket while it is still damp. A slight wet-fabric smell may disappear during drying, but a strong urine, sour, or oily smell usually means it needs another treatment.
Do not dry a blanket with a strong remaining odor. Dryer heat may make the odor harder to remove.
8. Dry It Completely
Damp fabric can quickly develop a sour or musty smell.
Use the dryer setting allowed by the care label. Low or medium heat is safer for many synthetic pet blankets, but some materials require air drying.
When air drying:
Really smelly pet blankets usually need more than one quick wash; learn whether laundry detergent can dissolve pet hair, what detergents actually do, and which pre-wash, washer, dryer, and filter steps remove more fur.
- Spread the blanket out instead of leaving it folded
- Place it where air can move around both sides
- Turn it over during drying
- Keep it out until the thickest areas are fully dry
Sherpa, fleece, quilted blankets, and blankets with waterproof backing may feel dry on top while moisture remains inside.
Can You Use Baking Soda?
Baking soda may help with mild surface odors, but it may not remove deep smells caused by body oils or pet accidents.
For a dry blanket, you can lightly sprinkle baking soda over the surface, let it sit, and vacuum it away before washing. Keep pets away while the powder is loose.
Some people add baking soda to a wash load. Check the washer manual, the blanket care label, and the product directions before doing this. It should not replace detergent or proper stain treatment.
Can You Use Vinegar?
White vinegar is sometimes used during laundry to help with certain odors and detergent residue. However, it is not suitable for every washer, fabric, waterproof coating, or laundry product.
Check your washer guidance and the blanket’s care label first. Never pour vinegar directly onto a delicate or colored blanket without testing it.
Do not combine vinegar with bleach or mix different cleaning products together. Mixing cleaners can create unsafe fumes or damage fabric.
What to Avoid
Do Not Use Heavy Fragrance to Hide the Smell
Scent boosters, sprays, and large amounts of softener may cover an odor for a short time. They do not remove urine, oils, dirt, or dampness.
A clean blanket should smell neutral once it is fully dry.
Do Not Overload the Washer
A packed washer cannot rinse a thick blanket well. The outside may look clean while the inner folds still hold dirty water.
Wash one bulky blanket at a time when needed.
Do Not Use High Heat Without Checking
High dryer heat can shrink fabric, flatten fleece, damage waterproof backing, or set leftover odor.
Check the blanket while drying and remove it once it is completely dry.
Do Not Mix Cleaning Products
Never mix bleach with ammonia-based products, vinegar, or other cleaners. Follow one product system at a time and rinse as directed.
Do Not Let the Blanket Sit Wet
Move the blanket to the dryer or drying rack soon after the wash ends. Leaving it in the washer can create a new musty smell.
How to Handle Odor That Remains After Washing
A second wash may be needed when the blanket has thick fabric, old urine spots, or a heavy buildup of pet oils.
Before rewashing:
- Smell different areas to find where the odor is strongest.
- Check for hidden stains or damp sections.
- Pre-treat the problem area again.
- Use a full wash cycle rather than a quick cycle.
- Add an extra rinse.
- Dry the blanket completely.
If the smell returns as soon as the blanket gets warm or damp, residue may still be inside the fabric.
A blanket may be difficult to restore when it has damaged waterproof backing, old foam, deep-set contamination, or fabric that cannot be thoroughly washed. Replacement may be the practical choice if repeated cleaning does not remove the odor.
Cleaning Different Types of Pet Blankets
Fleece Blankets
Fleece is easy to wash but can hold hair, oils, and detergent residue.
Use the correct amount of detergent and skip fabric softener unless the label allows it. High heat can flatten or damage the surface, so follow the drying directions carefully.
Cotton Blankets
Cotton often handles a stronger wash than delicate fabric, but it can shrink. Check the care label before using hot water or high dryer heat.
Large cotton blankets become heavy when wet. Make sure your washer can handle the load.
Sherpa and Plush Blankets
Thick, fluffy blankets can trap odor deep in the pile. Pre-treat smelly spots and use an extra rinse.
Dry them thoroughly. The backing may stay damp longer than the fluffy side.
Waterproof Pet Blankets
Waterproof or water-resistant layers may be damaged by bleach, fabric softener, high heat, or harsh cycles.
Follow the manufacturer’s instructions. Do not assume the waterproof layer can handle the same wash routine as plain fleece.
Wool Blankets
Wool can shrink, felt, or lose its shape when washed with heat and agitation.
Use the exact care instructions on the label. Some wool blankets need hand washing or professional cleaning rather than a normal machine cycle.
How to Keep Pet Blankets From Getting So Smelly
Wash pet bedding before the odor becomes strong. Frequent light cleaning is easier than trying to remove weeks of oil, saliva, and dirt.
A simple routine may include:
- Shaking out hair and crumbs every few days
- Letting damp blankets dry before placing them in a basket
- Washing muddy paws before bedtime
- Using a washable cover over thick pet beds
- Keeping two blankets so one can be used while the other dries
- Cleaning the pet bed, crate pad, or couch cover at the same time
Also check the place where the blanket sits. A clean blanket placed back onto a smelly foam bed, crate mat, car seat, or rug can pick up the odor again.
Frequently Asked Questions
Why does my pet blanket still smell after washing?
The washer may not have removed deep body oils, urine residue, or detergent buildup. The machine may also have been overloaded, or the blanket may not have dried fully. Pre-treat the smelly area, wash it with room to move, add an extra rinse, and dry it completely.
Should I wash pet blankets separately?
Yes, heavily soiled or hairy pet blankets are usually best washed alone or with other pet bedding. This helps keep hair, dirt, and odor away from clothing, bath towels, and regular bed sheets.
Can I use fabric softener on pet blankets?
Check the care label first. Fabric softener can leave residue and may reduce absorbency or affect fleece, microfiber, and waterproof coatings. It can also make it harder to tell whether the odor has actually been removed.
What water temperature is best for smelly pet blankets?
Use the warmest water allowed by the care label. Warm water works for many washable blankets, while delicate, dark, wool, or shrink-prone fabrics may need cool water. Use hot water only when the manufacturer allows it.
Can I put a urine-soaked pet blanket straight into the washer?
Remove solid messes and blot or rinse heavy contamination first when the care instructions allow it. Pre-treat the affected area with a suitable laundry product before washing. Do not overload the machine.
Why does the blanket smell fine when dry but bad when damp?
Moisture can release odor from residue still trapped in the fibers. The blanket may need another pre-treatment and wash. It may also be drying too slowly or staying damp inside thick layers.
How often should pet blankets be washed?
Wash them whenever they are dirty, damp, or noticeably smelly. Blankets used by muddy pets, puppies, older pets, or pets that sleep outdoors may need more frequent cleaning. Always follow the care label because repeated hot washing can wear some materials faster.
When should I replace a smelly pet blanket?
Replacement may make sense when odor remains after repeated proper washing, the filling cannot dry fully, waterproof backing is peeling, foam is contaminated, or the fabric is too damaged to clean safely.
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