Our pet insect repellent collars contain lavender oil, camphor oil, peppermint oil. It can remove parasites from pets, prevent the growth of parasites, and protect the health of pets. The method of use is simple: first blow dry the hair on the pet's neck, then open the package, take out the collar and put it on the pet, and adjust the size as needed. After use, it can remove parasites, maintain pet health, and make pets healthier