February 20, 2018 Category: Parasite Education

Where do dogs get fleas? Why do fleas multiply so rapidly?

No matter where you live or the time of year, your dog is at risk for fleas. New fleas can hatch in as little as five days, or may remain dormant for months. Most pet owners don't recognize a flea infestation right away, so it's important to protect your dog all year-round.

Check out our short video to learn about the four stages in the lifecycle of a flea and find out what you can do to protect your dog.

Be sure to ask your veterinarian how to kill fleas and prevent future infestations with a flea protection product such as Trifexis® (spinosad + milbemycin oxime). Trifexis kills fleas before they can lay eggs. It also prevents heartworm disease, and treats and controls adult hookworm (A. caninum), roundworm and whipworm infections. Trifexis is approved for use in dogs and puppies 8 weeks of age or older and 5 pounds of body weight or greater.

Watch video


The use of ivermectin at higher than FDA-approved doses at the same time as Trifexis can result in serious side effects. Treatment with fewer than three monthly doses after the last exposure to mosquitoes may not provide complete heartworm prevention. Prior to administration of Trifexis, dogs should be tested for existing heartworm infection. Use with caution in breeding females. The safe use of Trifexis in breeding males has not been evaluated. Use with caution in dogs with pre-existing epilepsy.

The most common adverse reactions reported are vomiting, depression/lethargy, itching, decreased appetite, and diarrhea. To ensure heartworm prevention, observe your dog for one hour after administration. If vomiting occurs within an hour of administration, redose with another full dose. Puppies less than 14 weeks of age may experience a higher rate of vomiting. Like all medications, keep Trifexis out of reach of children.

View full product label for complete safety information.