Peer-reviewed veterinary case report
Metaflumizone spot-on kills resistant fleas on cats for 3 weeks
By Dryden, Michael et al.·Published in Veterinary parasitology·2008·Department of Diagnostic Medicine/Pathobiology, United States·View original on PubMed →
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Original publication title: Efficacy of a topically applied spot-on formulation of a novel insecticide, metaflumizone, applied to cats against a flea strain (KS1) with documented reduced susceptibility to various insecticides.
- Species:
- cat
Plain-English summary
A group of adult domestic short hair cats was treated with a new flea treatment called metaflumizone to see how well it worked against a tough flea strain. The cats were infested with fleas and then treated, with the metaflumizone showing over 99% effectiveness for the first three weeks and still over 86% effective after six weeks. In comparison, another treatment, fipronil with methoprene, started strong but dropped in effectiveness much faster. Overall, metaflumizone proved to be a more effective option for keeping fleas away from cats over a longer period.
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Abstract
A spot-on metaflumizone formulation was evaluated in adult domestic short hair cats to determine its adultidical efficacy against a flea strain that has reduced susceptibility to a number of insecticides. Eight cats served as non-treated controls, eight cats were treated with a metaflumizone formulation at 0.2 ml/kg (40 mg metaflumizone/kg) and eight cats were treated with fipronil 10% w/v-(s)-methoprene 12%w/v at 0.075 ml/kg (7.5-7.7 mg fipronil/kg:9.0-9.2 mg (s)-methoprene/kg). On days -1, 7, 14, 21, 28, 35, and 42 each cat was infested with approximately 100 unfed KS1 cat fleas, Ctenocephalides felis. At approximately 48 h after treatment or infestation, each cat was combed to remove and count live fleas. Treatment with metaflumizone provided > or = 99.3% efficacy for 3 weeks post-treatment and then 97.4, 91.4 and 86.2% efficacy at 4, 5 and 6 weeks post-treatment, respectively. Fipronil-(s)-methoprene provided 99.6% efficacy at 1 week post-treatment and then 97.6, 96.4, 71.3, 22.0 and 13.1% efficacy at weeks 2, 3, 4, 5 and 6, respectively. The reductions in flea numbers were significantly greater for the metaflumizone treatment than for fipronil-(s)-methoprene from 3 to 6 weeks after treatment.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/18022186/