NEXTSTAR Flea & Tick Topical for Dogs delivers rapid-action pest defense with a single monthly application, offering protection for up to 30 days. It kills fleas, ticks, mosquitoes, chewing lice, flea eggs and larvae, and halts the development of flea pupae. No prescription is needed, and the waterproof solution starts working in about 5 minutes once applied to your dog’s skin.
Available in 1-dose (1-month), 3-dose (3-month), 6-dose (6-month), and 9-dose (9-month) supply options.
Fipronil, Cyphenothrin, and (S)-methoprene.
| Active Ingredient | Concentration |
| Fipronil | 9.80% |
| Cyphenothrin | 5.20% |
| (S)-Methoprene | 8.80% |
| Other Ingredients | 76.20% |
| Total | 100% |
Directions for Use
We offer ground, express, priority, and international delivery; see our shipping policy for details.
For return instructions or product concerns, please refer to our detailed refund policy.
Ans: NEXTSTAR Flea & Tick Topical for Extra Large Dogs works through contact, killing fleas, ticks, and other pests without requiring them to bite your pet. Its active ingredients—Fipronil, Cyphenothrin, and (S)-Methoprene—target all life stages, effectively breaking the flea lifecycle and preventing re-infestation for up to 30 days.
Ans: Yes, NEXTSTAR is a waterproof topical treatment that remains effective even after your dog is bathed or swims. However, it’s recommended to wait at least 24 hours after application before exposing your dog to water to ensure the product is fully absorbed.
Ans: You should apply one full tube every 30 days for continuous protection. Avoid reapplying before the recommended time frame, as overuse can lead to overexposure or irritation. Monthly applications provide consistent, year-round protection from fleas, ticks, and other pests.
Ans: Avoid contact with your eyes, skin, or clothing when applying the product, as it may cause irritation. Always wash your hands thoroughly afterward and keep treated dogs away from children and other pets for 24 hours post-application to ensure safety.
Ans: One application offers continuous protection for up to 30 days. Each dose kills and prevents fleas, ticks, and other pests throughout that period, ensuring your dog stays safe between monthly treatments with consistent pest control coverage.
Absolutely reliable, great price and fast delivery! Thank you Discount Pets! I will be ordering my Fish Mox here from now on.
fast shipping
Works great
Thank you so much for making this affordable and work so quickly. My fish are now happy and healthy.
Good
The fish were feeling bad and this really helped them get back to normal.
I still have to to observe for a few more applications before I can make any comments
Purchased these to have on hand incase this parasite infestation enters my fish tank. Shipping was super fast. I plan on making future purchases.