Should I give my cat a bath before treating for fleas?

By Ellie

April 30, 2026
1 MIN READ

You don't necessarily need to wash your cat before using flea treatment but if you are thinking of doing so, here are a couple of reasons why it is in fact very helpful:

You're washing your cat with flea shampoo
If you are washing your cat with flea shampoo, prior to treatment this can be helpful to remove any live fleas and then let the treatment do it's thing. Make sure to not overuse treatment as the active ingredients across all flea treatment options are very strong and powerful - Always follow the tailored dose on the flea treatment.

You're using spot on flea treatment
Spot on flea treatment, otherwise known as flea drops or flea liquid is used once a month, every month to kill fleas for up to 30 days (and then you follow with the next monthly treatment). As this flea treatment is applied directly on your cat and uses the skin's oils to disperse across all of their fur, it's key that after applying spot on flea treatment you don't get your kitty wet for 48 hours - This includes muddy puddles, rain and them or other pets licking the treatment spot.

So, it might be wise to wash them and fully dry your pet the day before apply spot on flea treatment so they are clean for at least the next few days. You should not bath your cat right before applying treatment as this can reduce the effectiveness and might mean the treatment doesn't work.

Bathing your pet is never going to eradicate all the fleas on your cat. For best results, combine treatment with cleaning your home: wash bedding, vacuum carpets, and treat other pets at the same time. Fleas live in the environment as much as on your cat. So it's key to use a household flea spray to kill flea eggs lurking in your house.

Tailored flea treatment for all cats.

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Itch Flea kills all adult fleas on your cat in 24 hours and halts all other life stages. Delivered for free, every month, exactly when you need it.

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Should I give my cat a bath before treating for fleas?

Tailored flea treatment for all cats.