Peer-reviewed veterinary case report
Effectiveness of two flea treatments on cats with KS1 fleas
By Dryden, Michael W et al.·Published in Parasites & vectors·2011·Kansas State University, United States·View original on PubMed →
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Original publication title: Efficacy of imidacloprid + moxidectin and selamectin topical solutions against the KS1 Ctenocephalides felis flea strain infesting cats.
- Species:
- cat
Plain-English summary
A group of cats infested with fleas were treated with either a combination of imidacloprid and moxidectin or selamectin to see which worked better. Both treatments showed high effectiveness in killing fleas, with the imidacloprid and moxidectin combination performing slightly better, especially after 12 hours. After 28 days, the imidacloprid and moxidectin treatment still maintained a high level of effectiveness, while the selamectin's effectiveness dropped more significantly. Both treatments are good options for controlling fleas for a month, but the imidacloprid and moxidectin combination may be the better choice for quicker results.
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Abstract
BACKGROUND: Two studies were conducted to evaluate and compare the efficacy of imidacloprid + moxidectin and selamectin topical solutions against the KS1 flea strain infesting cats. In both studies the treatment groups were comprised of non-treated controls, 6% w/v selamectin (Revolution®; Pfizer Animal Health) topical solution and 10% w/v imidacloprid + 1% w/v moxidectin (Advantage Multi® for Cats, Bayer Animal Health) topical solution. All cats were infested with 100 fleas on Days -2, 7, 14, 21, and 28. The difference in the studies was that in study #1 efficacy evaluations were conducted at 24 and 48 hours post-treatment or post-infestation, and in study #2 evaluations were conducted at 12 and 24 hours. RESULTS: In study #1 imidacloprid + moxidectin and the selamectin formulation provided 99.8% and 99.0% efficacy at 24 hours post-treatment. On day 28, the 24 hour efficacy of the selamectin formulation dropped to 87.1%, whereas the imidacloprid + moxidectin formulation provided 98.9% efficacy. At the 48 hour assessments following the 28 day infestations, efficacy of the imidacloprid + moxidectin and selamectin formulations was 96.8% and 98.3% respectively. In study # 2 the efficacy of the imidacloprid + moxidectin and selamectin formulations 12 hours after treatment was 100% and 69.4%, respectively. On day 28, efficacy of the imidacloprid + moxidectin and selamectin formulations 12 hours after infestation was 90.2% and 57.3%, respectively. In study #2 both formulations provided high levels of efficacy at the 24 hour post-infestation assessments, with selamectin and imidacloprid + moxidectin providing 95.3% and 97.5% efficacy, following infestations on day 28. CONCLUSIONS: At the 24 and 48 hour residual efficacy assessments, the imidacloprid + moxidectin and selamectin formulations were similarly highly efficacious. However, the imidacloprid + moxidectin formulation provided a significantly higher rate of flea kill against the KS1 flea strain infesting cats at every 12 hour post-infestation residual efficacy assessment. Both formulations should provide excellent flea control for an entire month on cats.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/21914186/