Revolution Hi, I have two yorkies, both boys. I have used the Revolution on them since they were about 2.5 pounds. There is a revolution that comes in a purple package for those under 10 pounds. I would not use on a pup that is 2 pounds or under without vet approval. I love Revolution, it takes care of heartworm, fleas, ticks and mites and even sarcoptic mange, which one of my boys had when I got him. No messing with giving them pills for the heartworm, it is relatively inexpensive, I pay $35 for 3 months at my vets. |