Niki Natural Defence is a product line enriched with Neem oil, a natural component always used for cosmetic purposes. The animal's body heat helps release substances present in the collar. The soft, pleasantly scented rubber makes it easy to use and particularly comfortable for the dog. How to use the dog collar with Neem oil: The Niki Natural Defence natural protective collar for dogs is suitable for all sizes; to get the correct size, simply cut it according to the circumference of the animal's neck. Once opened, it lasts up to 6 weeks and is water-resistant. Warnings Avoid contact with eyes. Keep out of reach of children. Not a toy. Use appropriately. Do not ingest. For external use only. Do not disperse into the environment. A practical, quick and effective solution. Available for sale only in Europe.