The Herba Max anti-parasite collar for dogs is a product based on natural oils, which spread throughout the pet's coat. It protects against parasites and prevents the animal from biting or scratching itself, it has a pleasant smell. CHARACTERISTICS - protection of animals for 4 months - active principle resistant to water - does not disturb the smell of the animal COMPOSITION - based on natural essences, LDPE 90%, perfume. INSTRUCTIONS FOR USE - remove the collar from the package and put it around the animal's neck. Cut off unnecessary excess material.