How to treat a blanket for fleas?

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How to treat a blanket for fleas? - briefly
Launder the blanket in water hotter than 130 °F with regular detergent, then tumble‑dry on the highest setting for at least 30 minutes. If washing is not feasible, apply an EPA‑approved flea spray to the fabric and repeat the treatment after 24 hours to eradicate all life stages.

How to treat a blanket for fleas? - in detail
Treating a flea‑infested blanket requires a combination of mechanical cleaning, thermal treatment, and, if necessary, chemical intervention. Follow each step to ensure complete eradication.

Initial shake‑out

Take the blanket outdoors and vigorously shake it for several minutes.
Brush the surface with a stiff‑bristled brush to dislodge adult fleas, eggs, and larvae.

Hot water wash

Place the blanket in a washing machine set to the highest temperature the fabric can tolerate (typically 130 °F/54 °C).
Use a regular detergent and add a cup of white vinegar to neutralize flea odors.
Run a full wash cycle followed by an extra rinse.

Drying with heat

Transfer the blanket to a dryer on the highest heat setting compatible with the material.
Dry for at least 30 minutes; heat above 120 °F (49 °C) kills all life stages of fleas.

Inspection

After drying, examine the blanket under bright light.
Look for any remaining insects, eggs, or fecal specks. If any are found, repeat the wash‑dry cycle.

Chemical treatment (optional)

For heavily infested or delicate fabrics that cannot withstand high heat, apply a flea‑specific spray labeled safe for textiles.
Follow label directions regarding concentration, contact time, and ventilation.
Allow the blanket to air‑dry completely before use.

Preventive measures

Store the blanket in a sealed plastic bag when not in use.
Keep the surrounding area vacuumed and treat pet bedding regularly to avoid re‑infestation.

By executing these procedures—mechanical removal, high‑temperature laundering, thorough drying, and, if needed, targeted insecticide application—you can reliably eliminate fleas from a blanket and prevent recurrence.