Simparica is a chewable fast-acting oral flea and tick preventative pill, it is also safe to give it all year round. You can order it from
www.chewy.com. They have it for dogs weighing 3 to 6 pounds. It requires a prescription from your veterinarian, chewy will call your vet to make sure your dog can be given it. You can also call them and ask about the leash size .
I have Cody on Simparica for 5 years with no side affects and no fleas or ticks, Cody weighs 12 pounds
Here's is Chewy's # 800-672-4399.