Available in 3- or 6-month formulas: Description Color Dogs Up to 22 lbs Orange Dogs 23-44 lbs Green Dogs 45-88 lbs Red Dogs 89-132 lbs Blue Cats Over 12 Weeks Purple Active Ingredients Dog Formula: Fipronil 9.80%, (S)-methoprene 8.80% Cat Formula: Fipronil 9.80%, (S)-methoprene 11.80% Directions for use: How to open Remove product tubes from the package. Separate one tube from the others. Holding the tube with notched end up and pointing away from the face and body, cut off the narrow end at the notches with scissors. How to apply Invert tube over dog/cat and use open end to part dog/cat’s hair. Squeeze tube firmly to apply all of the solution to the dog/cat’s hair, as directed. Apply in areas where pet cannot lick or ingest the product. Hold the dog/cat still for a few seconds to allow the solution time to be absorbed into the coat. When finished, wrap the tube in paper and throw in the trash. Only one applicator per treatment is needed. Do not apply more often than once every 4 weeks. CAUTION: HAZARDS TO HUMANS. Harmful if swallowed. Causes eye irritation. Avoid contact with skin, eyes or clothing. Wash hands thoroughly with soap and water after handling and before eating, drinking, chewing gum, using tobacco, or using the toilet.