Concerning this item Expert-Level Blade Maintenance: Wahl's premium clipper blade oil will guarantee that the blades used for pet and dog grooming last for many years. You can prolong the life of your blades and get the best performance out of your pet clipper and blades by taking proper care of your clipping equipment and blades. All Wahl blade types should be used with Wahl Professional Blade Oil; using any other lubricant could harm your blades and animal clipper and void the warranty on your clipper. Wahl suggests utilizing the five-point oiling technique with our animal clippers to guarantee optimal performance when trimming and cutting your pet's fur. Put three drops on the blade and along the top of the teeth; rotate