Rester fra selamectin- behandlede kæledyr dræber loppeæg og larver, der ikke tidligere har været udsat for selamectin og således kan eksisterende lopprangreb fra dyrets omgivelser kontrolleres.
Debris from selamectin- treated pets kills flea eggs and larvae not previously exposed to selamectin and thus may aid in the control of existing environmental flea infestations in areas to which the animal has access.