Nutri-vet Defense plus For Dogs X-Large (over 66lbs)

Kills repels and prevents re-infestation of ticks for up to 6 weeks Kills repels and prevents re-infestation of fleas for up to 5 weeks Kills flea eggs and flea larvae for up to 8 weeks Kills and repels mosquitoes, lice, and mites for up to 4 weeks.