Questions & Answers Advantage Green Dogs Under 8.8lbs (4kg) - 4 Pack Ask a Question Question: why is a rabbit pictured on the box Answer: You can use this product for pet rabbits too. By Wardzinski on 26 Apr 2014 Question: What is the active ingredient of Advantage Green? Answer: The active ingredient is imidacloprid. By Sloelfpb on 11 Sep 2013 6-7 of 7 Questions