To confirm the long term safety of the Propoxur 10% plus Flumethrin 2.25% collar L size on dogs for 7 months, 9 dogs were divided into fitting on a one-collar group and a three-collars group. As the results, there was no evidence of incompatibility between the dogs and the collars, based on body weight, the clinical signs, local tolerance, hematological, bloodchemical and urinary parameters.
