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Why can some flea populations resist insecticides?
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flea
Flea (Ctenocephalides)
Fleas can develop resistance to insecticides in certain regions, which necessitates the use of new materials for effective control. This resistance occurs as populations adapt to chemical treatments, rendering standard sprays, dusts, or dips less effective over time.1
To manage flea infestations effectively, it is essential to treat both the infested host and the environment, such as bedding or nesting areas, where larval and pupal stages typically develop.1