Method of use: Remove the cuff from the sealed bag and discard, make sure there is no plastic residue in the connection. Tie the collar around the pet’s neck, adjust the length of the collar, it is best to insert two fingers between the collar and the neck. Once the collar has passed through the loop, keep 2 more or less and cut the rest. Note: Pets who are not used to wearing a collar may scratch the part of their use in the first days, please make sure the collar does not is not too tight. If your pet is wearing this product for the first time, please pay more attention to it. Some animals may be allergic to the ingredients in the product. If your pet exhibits reactions such as dermatitis, infection, eczema or skin lesions, remove the collar immediately. This product is water resistant, but frequent and prolonged contact with water should be avoided as it may shorten its useful life. The collar is not a problem when using normal pets, but if the pet lives in a high parasite density