Find a vet

Smart is

a heartworm medication that
protects against fleas, too.


What's hiding in your home?

Unlike other flea treatments that only control adults, Sentinel® Spectrum® (milbemycin oxime/lufenuron/praziquantel) and Sentinel® Flavor Tabs® break the life cycle at the egg stage to prevent flea populations from infesting pets and their environments.*

*Dryden M, MacDonald J, Hnilica K, et al. 2005 Guidelines: Flea Control for Dogs and Cats. Advanstar Veterinary Healthcare Communications. 2005.

Get smart about fleas
  • A female flea can lay 50 eggs every day — as many as 2,000 eggs in her 2- to 3-month lifetime.
  • Female fleas consume 15 times their weight in blood every day.
  • Eggs fall off your pet wherever it goes.
  • Eggs hatch into maggot-like larvae in 2 to 4 days
  • Larvae are repelled by light and burrow into carpet, fabric, cracks and crevices.

By the time you see one flea, you could already have spent months living with an infestation of eggs and maggot-like larvae hiding where you least expect — in your bedding, carpets, furniture, and even between floorboards.

Stop fleas before they become adults.

View flea FAQs
smart is more protection at a better value.

getting more protection.

Two Ways to Protect Your Dog

Giving your dog Sentinel® (milbemycin oxime/lufenuron) Flavor Tabs® is the smart and easy way to protect against fleas year-round. Just one flavored tablet with a meal, once a month stops fleas from becoming adults — putting an end to the infestation cycle.

Get a Monthly Reminder
Get A Rebate And Save More

Sentinel® Spectrum® (milbemycin oxime/lufenuron/praziquantel): Dogs should be tested for heartworm prior to use. Mild hypersensitivity reactions have been noted in some dogs carrying a high number of circulating microfilariae. Treatment with fewer than 6 monthly doses after the last exposure to mosquitoes may not provide complete heartworm prevention. Please see full product label for more information.