Peer-reviewed veterinary case report
Which flea medicine kills fleas fastest on cats?
By Schnieder, T et al.·Published in Veterinary therapeutics : research in applied veterinary medicine·2008·University of Veterinary Medicine Hannover, Germany·View original on PubMed →
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Original publication title: Comparative efficacy of imidacloprid, selamectin, fipronil-(S)-methoprene, and metaflumizone against cats experimentally infested with Ctenocephalides felis.
- Species:
- cat
Plain-English summary
A group of flea-infested cats was treated with different flea medications to see which worked best at killing fleas quickly. The treatment with imidacloprid was found to be the most effective, killing a significant number of fleas within 24 hours and continuing to show the best results even after reinfestation. By day 34, imidacloprid reduced flea counts by nearly 91%, while the other treatments were less effective. This means that using imidacloprid can help quickly eliminate fleas and reduce the risk of related skin problems in cats.
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Abstract
Four active ingredients--imidacloprid selamectin, fipronil-(S)-methoprene, and metaflumizone--were tested to assess the speed of flea kill against existing flea infestations and subsequent reinfestations. Thirty flea-infested cats were allocated to four treatment groups and one untreated control group. Flea counts were performed 6, 18, and 48 hours after treatment (day 0) and 2, 4, and 24 hours after weekly flea reinfestations. Cats were also reinfested with fleas after the 6- and 18-hour counts on day 0 and after the 2- and 4-hour counts on subsequent count days. Imidacloprid provided significantly greater flea kill at diverse time points. At the 24-hour counts, all compounds showed expected and similar high efficacies. On study day 34, imidacloprid showed the highest efficacy at 24 hours after reinfestation, with 90.8% flea reduction compared with 55.7% to 67.4% in the other treatment groups. A single topical application of imidacloprid provided a high efficacy in the early elimination of adult fleas, limiting the risk of pathogen transmission and flea allergy dermatitis.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/19003778/