Sentinel Dog | Petco

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Vet Q & A
What OTC flea treatment is safe for my diabetic dog on Sentinel?
Over the counter flea products that are fine to use with sentinel include frontline plus, advantage and Advantix. Just be sure to not bathe your dog a couple days before or after applying any of those products as that can affect how effective they are.
Updated on September 24th, 2025
Medications
Dog on Sentinel has fleas. Can I add K9 Advantix for flea control?
Hello, sentinel has an IGR which essentially prevents immature fleas from becoming adult fleas. It does not kill adult fleas. You can still use an adulticide such as advantix spot on to kill the adult fleas. Hope this helps and best of luck.
Updated on September 24th, 2025
Health & Wellness
My dog is at the weight limit for flea/heartworm meds. What dose?
Sentinel has no tick coverage and does not kill fleas. It only sterilizes the eggs. I always go up a size to be safe as most dogs gain weight but rarely lose weight. It has a good safety margin so using the 25-50 pounds medicine would be best. You will continue to need the Simparica or nexgard with this
Updated on September 24th, 2025
Health & Wellness
Sentinel for fleas: Can I use Cap Shield Plus for adult fleas?
Hello. I would stop the Cap Shield Plus because it contains lufernon & so does the Sentinel. Lufernon is useful for flea control, but does not kill adult fleas. You can use a similar product just called Capstar, & this can be used daily, if necessary to kill adult fleas. Or, you can administer it as needed if you see fleas. It is safe to give with the Sentinel. You can also use something else to kill your adult fleas & get ticks, such as Frontline Gold, Advantix or even a Seresto Collar to compliment the Sentinel. Thanks for using Petco Pet Education Center, formerly Petcoach.
Updated on September 24th, 2025
Medications
Dog on Sentinel has fleas. What's the best way to treat and prevent?
You're correct that Sentinel is considered a "passive" flea control product - it doesn't kill adult fleas, just keeps their eggs from being able to hatch. Capstar would be quite effective at killing any fleas that he currently has on him. It shouldn't be necessary to wash bedding, etc. since the Sentinel will ensure that the fleas are not able to reproduce. In my experience, some dogs do fine with Sentinel as their only flea control method if they are in an environment where they are rarely exposed to fleas. But if you're seeing fleas from time to time, or if your dog has flea allergies or other skin sensitivities, then I would recommend using an adulticide like Nexgard or Bravecto along with his Sentinel.
Updated on September 24th, 2025