I use Revolution on my 6 month old. I buy a 3 month supply from my vet for $39.00. So the $70.00 for 6 months supply is a good price. My vet only carries the 3 month supply box. So far we haven't had any ticks or fleas.
I used it when my 2 year was a puppy also. I use Frontline on her and she takes the Interceptor for heart worm protection. I am probably going to switch her back to the Revolution when she runs out of these. It is less money to use the Revolution vs buying flea/tick protection and a seperate protection for heart worms. My vet is very confident that the Revolution is a good product.
Telea, Zoe' and baby Mia