Ordered Frontline and didn't realize this was coming from outside the US. Product is made in Africa and packaging doesn't look at all the same. That made me nervous. After reading the reviews I called and asked to return the 100% guaranteed product. It cost me $24 to ship back $61 worth of product that weighed 1/2 pound to the UK. The customer service team was very helpful, but just know the free shipping only goes one way. If you're unhappy with the product, you have to be willing to pay a lot to return.