Why are my fleas not going away after treatment?

By Nicky

October 1, 2025
1 MIN READ

Depending on the flea treatment you use, depends how quickly your fleas will die. Some flea treatments kill fleas in 24 hours, like Itch Flea Treatment for Cats and Itch Flea Treatment for Dogs, whereas others might take a bit longer.

If you are still seeing fleas long after you used flea treatment, this could be because of a few different things:

The flea treatment was wrongly applied

Whether you got your pet wet after applying treatment or you didn’t treat all the pets in your household at the same time, there are several ways to not apply flea treatment correctly. Click here to find out how to apply flea treatment so that it works.
The flea treatment is ineffective for your scale of infestation

One dose of flea treatment won’t quite cut it for a house full of fleas. Make sure to treat your pet every month with ongoing flea treatment and treat your home with Itch Flea House Spray because 95% of fleas live in your environment.
The flea treatment you're using doesn’t target the entire flea life cycle

It’s key to use flea treatment that doesn’t just kill adult fleas, but targets all life stages of fleas including their eggs. Click here to find out how to break the flea life cycle.

Remember to not just rely on flea treatment to get rid of fleas, you have to put in the leg work too! For up to 2 weeks after finding your first flea, vacuum your home daily and wash any belongings on a high heat (60 degrees or more).

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Why are my fleas not going away after treatment?