Through 7/6, save 20% off Flea & Tick Products with code JULY4TH at PetCareRx. Shipping starts at $5.95 or is free on orders over $35. Check out the pictured 3-Pack of Frontline Plus for Dogs up to 22lbs, which drops from $65.99 to $44.99 to $35.99 with code and qualifies for free shipping. This is the lowest price we could find anywhere. You'll also get a better discount per dose when you buy a larger quantity, such as the 6-pack. There is no sales tax (except NY).