Please comment if you are interested in a price reduction. Thank you for viewing. Revolution Spot is effective for the prevention of heartworm, fleas, and ear mites in puppies and kittens. For puppies and kittens under 2.5kg. Unused, 3 doses per box, 3 boxes total. Expiration date: March 2028 I am selling this because my dog suddenly passed away. Please feel free to ask if you have any questions. Please refer to the back of the box for efficacy, effects, and usage instructions.