Frontline is a helpful means to reducing ticks, but it doesn't eliminate the risk. At times we use Frontline heavily along with Preventic collars and that seems to deal with the most serious times. It depends where you live and where your dog hangs out. When we lived close to the beach and our dog only ever walked on the beach we never had a tick. We were very smug about it. As soon as we moved a couple of hundred meters from the beach, where there is grass, bushes and woodpiles, we started having to deal with ticks. Even with regular application of Frontline and the use of collars, we still have some tick problems when it has rained for a few days.
As with mosquitoes, nothing is 100% effective. I've even used Frontline directly on ticks here and found that they can survive it. Nothing you can really do about tick fever except note the symptoms, take them seriously and don't be afraid to visit the vet if you have any worries at all.
As for people who choose for whatever reason to leave pets behind - it usually isn't an easy decision and I have seen people have to make agonising decisions about the care of a pet when they can no longer keep it, so I am very sympathetic. However, if it just on the basis that she doesn't want the dog on the furniture, I would certainly be concerned about this person's sense of responsibility. When you take on a domestic animal, it is your responsibility for the rest of its life. In fact, ethically, when you breed a domestic animal it is your responsibility for the rest of its life. (the reason why all responsible companion animal breeders will take back any of their stock for any reason at any time - a word of advice to anyone purchasing a dog or cat (and some other pets) - if your breeder does not stipulate that they will take the animal back at any time for the rest of its life they would not be considered an ethical or scrupulous breeder by their peers).
Pampered Pets boards dogs. I don't board my dogs and am still having a nightmare finding someone I can trust to care for them in my home.
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"There isn't much to be seen in a little town, but what you hear makes up for it."
Kim Hubbard