I've found treating my yard helps a ton. I use a combination if neem and geranium oil and apply it to their coats. I've had 7 ticks on me this year and 0 on the dogs.
Frontline isn't working for us anymore. On fleas or ticks. We go to the vet in August and I'm going to check out the new product the name is totally slipping me right now. But it's flea/tick/hw in one.