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Expert Q&A: Flea and Tick Control

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By Betsy Riley
WebMD Feature
Reviewed by Amy Flowers, DVM

With so many new flea and tick control products, it’s hard to know which one is right for your pet. Here’s some advice from Ira Roth, DVM, director of the Community Practice Clinic at the University of Georgia’s College of Veterinary Medicine.

Are some flea and tick medicines better than others?

Every vet has favorites, and all the products work in different ways. Sometimes they kill just adult pests, and sometimes they kill eggs and larvae, too. Some work against fleas, ticks, and even heartworms. Others work against just one species. It’s really a matter of what type of protection each pet needs, the easiest way for the owner to apply it, and budget.

What's the right way to apply drops (aka "spot-on treatments")?

Generally, you apply the medicine between your pet’s shoulder blades, on the back of the neck. Make sure to part the hair so the liquid goes on the skin, and not just on top of the fur. Because the pesticide can be toxic, wait up to 24 hours while the liquid dries before touching the area or letting children play with the animal. Be sure to use the right dose for the age and size of your pet. Follow directions carefully, and never use dog products on cats. Some pesticides that are safe for dogs can even kill cats.

Are spot-on treatments dangerous?

In 2010, the Environmental Protection Agency ordered manufacturers to put better instructions on packages when the number of bad reactions jumped dramatically -- often because pet owners used drops incorrectly. However, the EPA did not recall any products. Individual pets can have problems with any type of flea or tick medicine. The main thing is to ask your vet for an appropriate medicine and to follow the instructions.

Are pills a better idea?

It’s really a matter of preference. Pills may give a few pets an upset stomach or even cause vomiting or diarrhea, so it’s a good idea to give them with food. There are a number of really good products, some in combination with heartworm control. Before, we did not have an oral product that controlled ticks, and now they’ve introduced a chewable, beef-flavored tablet for dogs that helps with both flea and tick control.

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