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Entry 118Filed under Breeding

Can the Dryer Kill Fleas on Cat Bedding? What to Do

High-heat drying can help reduce fleas in cat bedding, but it cannot guarantee that every flea stage—or an infestation—is eliminated.
3-minute read By Animalso Team
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High-heat drying can help reduce fleas in cat bedding, but it is not a guaranteed way to kill every flea or end an infestation. UC Davis School of Veterinary Medicine recommends washing animal bedding weekly in hot water and drying it on high heat for 20 minutes. Use that setting only if the bedding’s care label allows it; the guidance does not establish one temperature or cycle that works identically in every household dryer.

What dryer setting and time should you use?

For washable bedding that tolerates heat, follow the UC Davis recommendation: wash it weekly in hot water, then dry it on high heat for 20 minutes. The National Pesticide Information Center also recommends regularly washing and drying bedding using high heat. These are practical flea-control recommendations, not results from a controlled test proving a universal kill rate for every flea life stage, dryer, load size, or fabric.

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Check the care label before laundering. If the bedding cannot tolerate hot water or high heat, do not use a hotter setting than the manufacturer permits. Choose a washable bed if regular cleaning is impractical, and follow its care instructions.

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Does washing alone get rid of fleas?

Laundering can reduce flea burden and remove flea eggs, larvae, and pupae that are present in bedding, according to NC State Extension. But a clean bed does not mean the home or cat is flea-free. Fleas develop through four stages—egg, larva, pupa, and adult—and Cornell University College of Veterinary Medicine notes that pupae can remain undisturbed for months and resist drying.

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That is why bedding laundry belongs in a broader control plan. The CDC says moderate to severe infestations can take months to control and require a four-step process for complete elimination. Sanitation, including washing bedding and vacuuming, is part of that work, not a one-time cure.

How to clean cat bedding and reduce fleas nearby

  1. Wash and dry the bedding. Use hot water and high-heat drying for 20 minutes if the care label permits, following UC Davis guidance.
  2. Clean other resting places. Wash other washable items where the cat sleeps, and vacuum floors, rugs, furniture, and crevices. The CDC includes bedding laundry and vacuuming in flea-control sanitation.
  3. Dispose of vacuum contents carefully. UC Davis advises disposing of the vacuum bag after vacuuming flea source areas.
  4. Address the pets, not just the bedding. Ask a veterinarian about flea control suitable for every pet in the household. Cats are particularly sensitive to many pesticides; use only products labeled safe for cats, and never apply a household insecticide to an animal unless its label specifically permits that use.
  5. Get help if fleas persist. A veterinarian can recommend an appropriate plan if you continue to find fleas or the infestation is substantial.
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What the evidence does—and does not—show

UC Davis and the National Pesticide Information Center recommend high-heat laundering as part of environmental flea control. NC State Extension says washing and drying pet bedding can remove flea stages present there. However, those recommendations do not supply a measured mortality curve or prove that every dryer cycle kills all flea stages. Cornell’s warning that pupae can persist for months and resist drying is an important reason not to treat laundry as eradication.

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A 2001 study by Jacobs and colleagues tested laundry’s effect on imidacloprid larvicidal activity accumulated on fleece blankets. The procedure used a 50°C wash and low-temperature tumble drying, and the finding concerned removal of that insecticide activity—not flea mortality. It should not be interpreted as a dryer test.

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For additional guidance, see UC Davis School of Veterinary Medicine’s flea-control guidance, the CDC’s flea-control steps, and the National Pesticide Information Center’s flea guidance.

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