Directions: Place collar around cat's neck. Adjust to fit by leaving approximately 1/4 inch of space between pet's neck and collar. Cut off excess portion of collar, leaving 1-2 inches for extra adjustment. For growing kittens, regularly adjust the fit of the collar to make sure it's not too tight. For all cats, monitor daily to ensure proper fit. Using good hygiene practice, wash hands with soap and water after placing collar on cat. The effects of the collar last up to 30 days. Seal collar in plastic bag when not in use to prolong the effect.