Although manufactured for sale outside the US, this is the same formula as sold in the US. Merchant provides a printout explaining this and assures it is safe and US -government approved. I buy the six-month supply for the best price and because it is needed all year round where I live.
I had concerns about the product being the same in the Canadian packaging. I have used the Frontline Plus from Fatmans Doghouse for 2 years now and my dogs haven't had a single flea or tick on them. Great product
FRONTLINE Plus provides your dog with the most complete spot-on flea and tick protection available. In addition to killing 98-100% of adult fleas on your dog within 24 hours, FRONTLINE Plus contains a special ingredient that kills flea eggs and larvae, too, and keeps ALL stages of fleas from developing. By effectively stopping the development of new fleas, FRONTLINE Plus completely breaks the flea life cycle. And, FRONTLINE Plus kills all stages of 4 major ticks including those that may transmit Lyme disease and Rocky Mountain spotted fever. You can use FRONTLINE Plus with ease and confidence. It's applied just once a month to a single spot on your dog, between the shoulder blades. It's completely waterproof, so your dog can swim, get wet, and even be bathed without the need for re-application. What's more, FRONTLINE Plus is approved for use puppies 8 weeks and older and over 11 lbs. Kills fleas, & Flea Eggs up to three months and ticks for one month. Use once a month if pet has fleas which may cause flea allergy dermatitis. Remains effective even after bathing, water immersion, or exposure to sunlight. D0 NOT reapply for 30 daysGuaranteed authentic, USA EPA approved