Part of being a responsible dog owner is protecting your dog from the parasites that can plague dogs and cause health issues. Luckily it's much easier than it once was.
Now there are effective, easy to use medications – not only for flea and tick control, but for internal parasites too. It’s a complicated issue though - what’s best for one dog isn’t necessarily best for another. Your best and safest move is to ask your Vet about keeping your dog parasite-free.