Niki Natural Defence is a line of products enriched with Neem oil, a natural component traditionally used for cosmetic purposes. The animal's body heat releases substances contained in the collar. The soft rubber, pleasantly scented, makes it easy to use and particularly comfortable for the dog. Instructions for use of the Neem oil dog collar: The Niki Natural Defence natural protective collar for dogs is suitable for all sizes; to get the correct size, simply cut it 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. Do not release into the environment. A practical, quick, and effective solution. For sale only in Europe.